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Finding the Fourth Proportional to 658.87, 908.67 and 473.58

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Solution

The fourth proportional to 658.87, 908.67 and 473.58 is: 653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.87 : 908.67 = 473.58 : x
  2. Step 2: Convert to fraction form
    658.87/908.67 = 473.58/x
  3. Step 3: Cross multiply
    658.87x = 908.67 × 473.58
  4. Step 4: Simplify right side
    658.87x = 430,330.88
  5. Step 5: Solve for x
    x = 430,330.88/658.87
  6. Step 6: Final answer
    x = 653.13

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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.