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Finding the Fourth Proportional to 155.46, 214.44 and 126.12

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Solution

The fourth proportional to 155.46, 214.44 and 126.12 is: 173.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.46 : 214.44 = 126.12 : x
  2. Step 2: Convert to fraction form
    155.46/214.44 = 126.12/x
  3. Step 3: Cross multiply
    155.46x = 214.44 × 126.12
  4. Step 4: Simplify right side
    155.46x = 27,045.17
  5. Step 5: Solve for x
    x = 27,045.17/155.46
  6. Step 6: Final answer
    x = 173.97

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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.