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Finding the Fourth Proportional to 510.92, 766.53 and 218.27

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Solution

The fourth proportional to 510.92, 766.53 and 218.27 is: 327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.92 : 766.53 = 218.27 : x
  2. Step 2: Convert to fraction form
    510.92/766.53 = 218.27/x
  3. Step 3: Cross multiply
    510.92x = 766.53 × 218.27
  4. Step 4: Simplify right side
    510.92x = 167,310.50
  5. Step 5: Solve for x
    x = 167,310.50/510.92
  6. Step 6: Final answer
    x = 327.47

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Find fourth proportional to 255.46, 383.27 and 109.14
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.