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Finding the Fourth Proportional to 471.80, 708.24 and 437.78

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Solution

The fourth proportional to 471.80, 708.24 and 437.78 is: 657.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.80 : 708.24 = 437.78 : x
  2. Step 2: Convert to fraction form
    471.80/708.24 = 437.78/x
  3. Step 3: Cross multiply
    471.80x = 708.24 × 437.78
  4. Step 4: Simplify right side
    471.80x = 310,053.31
  5. Step 5: Solve for x
    x = 310,053.31/471.80
  6. Step 6: Final answer
    x = 657.17

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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.