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Finding the Fourth Proportional to 707.20, 974.39 and 473.92

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Solution

The fourth proportional to 707.20, 974.39 and 473.92 is: 652.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.20 : 974.39 = 473.92 : x
  2. Step 2: Convert to fraction form
    707.20/974.39 = 473.92/x
  3. Step 3: Cross multiply
    707.20x = 974.39 × 473.92
  4. Step 4: Simplify right side
    707.20x = 461,782.91
  5. Step 5: Solve for x
    x = 461,782.91/707.20
  6. Step 6: Final answer
    x = 652.97

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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.