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Finding the Fourth Proportional to 510.80, 766.13 and 327.60

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Solution

The fourth proportional to 510.80, 766.13 and 327.60 is: 491.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.80 : 766.13 = 327.60 : x
  2. Step 2: Convert to fraction form
    510.80/766.13 = 327.60/x
  3. Step 3: Cross multiply
    510.80x = 766.13 × 327.60
  4. Step 4: Simplify right side
    510.80x = 250,982.55
  5. Step 5: Solve for x
    x = 250,982.55/510.80
  6. Step 6: Final answer
    x = 491.36

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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.