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Finding the Fourth Proportional to 452.54, 624.42 and 253.28

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Solution

The fourth proportional to 452.54, 624.42 and 253.28 is: 349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.54 : 624.42 = 253.28 : x
  2. Step 2: Convert to fraction form
    452.54/624.42 = 253.28/x
  3. Step 3: Cross multiply
    452.54x = 624.42 × 253.28
  4. Step 4: Simplify right side
    452.54x = 158,149.98
  5. Step 5: Solve for x
    x = 158,149.98/452.54
  6. Step 6: Final answer
    x = 349.48

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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.