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Finding the Fourth Proportional to 658.79, 908.79 and 534.59

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Solution

The fourth proportional to 658.79, 908.79 and 534.59 is: 737.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.79 : 908.79 = 534.59 : x
  2. Step 2: Convert to fraction form
    658.79/908.79 = 534.59/x
  3. Step 3: Cross multiply
    658.79x = 908.79 × 534.59
  4. Step 4: Simplify right side
    658.79x = 485,830.05
  5. Step 5: Solve for x
    x = 485,830.05/658.79
  6. Step 6: Final answer
    x = 737.46

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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.