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Finding the Fourth Proportional to 473.38, 708.51 and 289.87

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Solution

The fourth proportional to 473.38, 708.51 and 289.87 is: 433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.38 : 708.51 = 289.87 : x
  2. Step 2: Convert to fraction form
    473.38/708.51 = 289.87/x
  3. Step 3: Cross multiply
    473.38x = 708.51 × 289.87
  4. Step 4: Simplify right side
    473.38x = 205,375.79
  5. Step 5: Solve for x
    x = 205,375.79/473.38
  6. Step 6: Final answer
    x = 433.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.