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Finding the Fourth Proportional to 658.28, 908.49 and 565.33

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Solution

The fourth proportional to 658.28, 908.49 and 565.33 is: 780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.28 : 908.49 = 565.33 : x
  2. Step 2: Convert to fraction form
    658.28/908.49 = 565.33/x
  3. Step 3: Cross multiply
    658.28x = 908.49 × 565.33
  4. Step 4: Simplify right side
    658.28x = 513,596.65
  5. Step 5: Solve for x
    x = 513,596.65/658.28
  6. Step 6: Final answer
    x = 780.21

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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.