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Finding the Fourth Proportional to 400.28, 552.32 and 242.89

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Solution

The fourth proportional to 400.28, 552.32 and 242.89 is: 335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.28 : 552.32 = 242.89 : x
  2. Step 2: Convert to fraction form
    400.28/552.32 = 242.89/x
  3. Step 3: Cross multiply
    400.28x = 552.32 × 242.89
  4. Step 4: Simplify right side
    400.28x = 134,152.23
  5. Step 5: Solve for x
    x = 134,152.23/400.28
  6. Step 6: Final answer
    x = 335.14

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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.