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Finding the Fourth Proportional to 473.28, 709.92 and 148.74

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Solution

The fourth proportional to 473.28, 709.92 and 148.74 is: 223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.28 : 709.92 = 148.74 : x
  2. Step 2: Convert to fraction form
    473.28/709.92 = 148.74/x
  3. Step 3: Cross multiply
    473.28x = 709.92 × 148.74
  4. Step 4: Simplify right side
    473.28x = 105,593.50
  5. Step 5: Solve for x
    x = 105,593.50/473.28
  6. Step 6: Final answer
    x = 223.11

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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.