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Finding the Fourth Proportional to 400.05, 552.14 and 242.70

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Solution

The fourth proportional to 400.05, 552.14 and 242.70 is: 334.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.05 : 552.14 = 242.70 : x
  2. Step 2: Convert to fraction form
    400.05/552.14 = 242.70/x
  3. Step 3: Cross multiply
    400.05x = 552.14 × 242.70
  4. Step 4: Simplify right side
    400.05x = 134,003.16
  5. Step 5: Solve for x
    x = 134,003.16/400.05
  6. Step 6: Final answer
    x = 334.97

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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.