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Finding the Fourth Proportional to 473.20, 710.03 and 438.98

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Solution

The fourth proportional to 473.20, 710.03 and 438.98 is: 658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.20 : 710.03 = 438.98 : x
  2. Step 2: Convert to fraction form
    473.20/710.03 = 438.98/x
  3. Step 3: Cross multiply
    473.20x = 710.03 × 438.98
  4. Step 4: Simplify right side
    473.20x = 311,686.52
  5. Step 5: Solve for x
    x = 311,686.52/473.20
  6. Step 6: Final answer
    x = 658.68

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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.