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Finding the Fourth Proportional to 458.25, 631.84 and 375.18

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Solution

The fourth proportional to 458.25, 631.84 and 375.18 is: 517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.25 : 631.84 = 375.18 : x
  2. Step 2: Convert to fraction form
    458.25/631.84 = 375.18/x
  3. Step 3: Cross multiply
    458.25x = 631.84 × 375.18
  4. Step 4: Simplify right side
    458.25x = 237,053.73
  5. Step 5: Solve for x
    x = 237,053.73/458.25
  6. Step 6: Final answer
    x = 517.30

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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.