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Finding the Fourth Proportional to 242.28, 334.12 and 158.22

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Solution

The fourth proportional to 242.28, 334.12 and 158.22 is: 218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.28 : 334.12 = 158.22 : x
  2. Step 2: Convert to fraction form
    242.28/334.12 = 158.22/x
  3. Step 3: Cross multiply
    242.28x = 334.12 × 158.22
  4. Step 4: Simplify right side
    242.28x = 52,864.47
  5. Step 5: Solve for x
    x = 52,864.47/242.28
  6. Step 6: Final answer
    x = 218.20

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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.