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Finding the Fourth Proportional to 688.79, 951.24 and 589.97

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Solution

The fourth proportional to 688.79, 951.24 and 589.97 is: 814.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.79 : 951.24 = 589.97 : x
  2. Step 2: Convert to fraction form
    688.79/951.24 = 589.97/x
  3. Step 3: Cross multiply
    688.79x = 951.24 × 589.97
  4. Step 4: Simplify right side
    688.79x = 561,198.31
  5. Step 5: Solve for x
    x = 561,198.31/688.79
  6. Step 6: Final answer
    x = 814.77

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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.