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Finding the Fourth Proportional to 824.52, 1,136.52 and 658.20

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Solution

The fourth proportional to 824.52, 1,136.52 and 658.20 is: 907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.52 : 1,136.52 = 658.20 : x
  2. Step 2: Convert to fraction form
    824.52/1,136.52 = 658.20/x
  3. Step 3: Cross multiply
    824.52x = 1,136.52 × 658.20
  4. Step 4: Simplify right side
    824.52x = 748,057.46
  5. Step 5: Solve for x
    x = 748,057.46/824.52
  6. Step 6: Final answer
    x = 907.26

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1.5x scale

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.