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Finding the Fourth Proportional to 457.59, 631.49 and 250.59

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Solution

The fourth proportional to 457.59, 631.49 and 250.59 is: 345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.59 : 631.49 = 250.59 : x
  2. Step 2: Convert to fraction form
    457.59/631.49 = 250.59/x
  3. Step 3: Cross multiply
    457.59x = 631.49 × 250.59
  4. Step 4: Simplify right side
    457.59x = 158,246.19
  5. Step 5: Solve for x
    x = 158,246.19/457.59
  6. Step 6: Final answer
    x = 345.82

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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.