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Finding the Fourth Proportional to 565.95, 781.17 and 329.95

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Solution

The fourth proportional to 565.95, 781.17 and 329.95 is: 455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.95 : 781.17 = 329.95 : x
  2. Step 2: Convert to fraction form
    565.95/781.17 = 329.95/x
  3. Step 3: Cross multiply
    565.95x = 781.17 × 329.95
  4. Step 4: Simplify right side
    565.95x = 257,747.04
  5. Step 5: Solve for x
    x = 257,747.04/565.95
  6. Step 6: Final answer
    x = 455.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.