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Finding the Fourth Proportional to 510.86, 766.20 and 233.15

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Solution

The fourth proportional to 510.86, 766.20 and 233.15 is: 349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.86 : 766.20 = 233.15 : x
  2. Step 2: Convert to fraction form
    510.86/766.20 = 233.15/x
  3. Step 3: Cross multiply
    510.86x = 766.20 × 233.15
  4. Step 4: Simplify right side
    510.86x = 178,641.45
  5. Step 5: Solve for x
    x = 178,641.45/510.86
  6. Step 6: Final answer
    x = 349.69

Related Problems

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Half scale
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Double scale
Find fourth proportional to 511.86, 767.70 and 234.15
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.