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Finding the Fourth Proportional to 400.52, 552.89 and 253.24

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Solution

The fourth proportional to 400.52, 552.89 and 253.24 is: 349.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.52 : 552.89 = 253.24 : x
  2. Step 2: Convert to fraction form
    400.52/552.89 = 253.24/x
  3. Step 3: Cross multiply
    400.52x = 552.89 × 253.24
  4. Step 4: Simplify right side
    400.52x = 140,013.11
  5. Step 5: Solve for x
    x = 140,013.11/400.52
  6. Step 6: Final answer
    x = 349.58

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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.