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Finding the Fourth Proportional to 515.92, 773.45 and 191.10

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Solution

The fourth proportional to 515.92, 773.45 and 191.10 is: 286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.92 : 773.45 = 191.10 : x
  2. Step 2: Convert to fraction form
    515.92/773.45 = 191.10/x
  3. Step 3: Cross multiply
    515.92x = 773.45 × 191.10
  4. Step 4: Simplify right side
    515.92x = 147,806.30
  5. Step 5: Solve for x
    x = 147,806.30/515.92
  6. Step 6: Final answer
    x = 286.49

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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.