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Finding the Fourth Proportional to 276.34, 414.54 and 93.70

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Solution

The fourth proportional to 276.34, 414.54 and 93.70 is: 140.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.34 : 414.54 = 93.70 : x
  2. Step 2: Convert to fraction form
    276.34/414.54 = 93.70/x
  3. Step 3: Cross multiply
    276.34x = 414.54 × 93.70
  4. Step 4: Simplify right side
    276.34x = 38,842.40
  5. Step 5: Solve for x
    x = 38,842.40/276.34
  6. Step 6: Final answer
    x = 140.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.