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Finding the Fourth Proportional to 565.98, 781.23 and 424.89

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Solution

The fourth proportional to 565.98, 781.23 and 424.89 is: 586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.98 : 781.23 = 424.89 : x
  2. Step 2: Convert to fraction form
    565.98/781.23 = 424.89/x
  3. Step 3: Cross multiply
    565.98x = 781.23 × 424.89
  4. Step 4: Simplify right side
    565.98x = 331,936.81
  5. Step 5: Solve for x
    x = 331,936.81/565.98
  6. Step 6: Final answer
    x = 586.48

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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.