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Finding the Fourth Proportional to 452.40, 624.15 and 255.91

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Solution

The fourth proportional to 452.40, 624.15 and 255.91 is: 353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.40 : 624.15 = 255.91 : x
  2. Step 2: Convert to fraction form
    452.40/624.15 = 255.91/x
  3. Step 3: Cross multiply
    452.40x = 624.15 × 255.91
  4. Step 4: Simplify right side
    452.40x = 159,726.23
  5. Step 5: Solve for x
    x = 159,726.23/452.40
  6. Step 6: Final answer
    x = 353.06

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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.