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Finding the Fourth Proportional to 510.14, 766.11 and 380.18

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Solution

The fourth proportional to 510.14, 766.11 and 380.18 is: 570.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.14 : 766.11 = 380.18 : x
  2. Step 2: Convert to fraction form
    510.14/766.11 = 380.18/x
  3. Step 3: Cross multiply
    510.14x = 766.11 × 380.18
  4. Step 4: Simplify right side
    510.14x = 291,259.70
  5. Step 5: Solve for x
    x = 291,259.70/510.14
  6. Step 6: Final answer
    x = 570.94

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Half scale
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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.