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Finding the Fourth Proportional to 452.61, 624.48 and 256.11

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Solution

The fourth proportional to 452.61, 624.48 and 256.11 is: 353.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.61 : 624.48 = 256.11 : x
  2. Step 2: Convert to fraction form
    452.61/624.48 = 256.11/x
  3. Step 3: Cross multiply
    452.61x = 624.48 × 256.11
  4. Step 4: Simplify right side
    452.61x = 159,935.57
  5. Step 5: Solve for x
    x = 159,935.57/452.61
  6. Step 6: Final answer
    x = 353.36

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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.