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Finding the Fourth Proportional to 567.28, 781.78 and 551.48

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Solution

The fourth proportional to 567.28, 781.78 and 551.48 is: 760.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.28 : 781.78 = 551.48 : x
  2. Step 2: Convert to fraction form
    567.28/781.78 = 551.48/x
  3. Step 3: Cross multiply
    567.28x = 781.78 × 551.48
  4. Step 4: Simplify right side
    567.28x = 431,136.03
  5. Step 5: Solve for x
    x = 431,136.03/567.28
  6. Step 6: Final answer
    x = 760.01

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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.