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Finding the Fourth Proportional to 452.34, 624.28 and 255.86

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Solution

The fourth proportional to 452.34, 624.28 and 255.86 is: 353.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.34 : 624.28 = 255.86 : x
  2. Step 2: Convert to fraction form
    452.34/624.28 = 255.86/x
  3. Step 3: Cross multiply
    452.34x = 624.28 × 255.86
  4. Step 4: Simplify right side
    452.34x = 159,728.28
  5. Step 5: Solve for x
    x = 159,728.28/452.34
  6. Step 6: Final answer
    x = 353.12

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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.