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Finding the Fourth Proportional to 452.72, 624.51 and 286.88

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Solution

The fourth proportional to 452.72, 624.51 and 286.88 is: 395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.72 : 624.51 = 286.88 : x
  2. Step 2: Convert to fraction form
    452.72/624.51 = 286.88/x
  3. Step 3: Cross multiply
    452.72x = 624.51 × 286.88
  4. Step 4: Simplify right side
    452.72x = 179,156.31
  5. Step 5: Solve for x
    x = 179,156.31/452.72
  6. Step 6: Final answer
    x = 395.73

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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.