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Finding the Fourth Proportional to 658.52, 908.33 and 518.41

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Solution

The fourth proportional to 658.52, 908.33 and 518.41 is: 715.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.52 : 908.33 = 518.41 : x
  2. Step 2: Convert to fraction form
    658.52/908.33 = 518.41/x
  3. Step 3: Cross multiply
    658.52x = 908.33 × 518.41
  4. Step 4: Simplify right side
    658.52x = 470,887.36
  5. Step 5: Solve for x
    x = 470,887.36/658.52
  6. Step 6: Final answer
    x = 715.07

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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.