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Finding the Fourth Proportional to 276.60, 414.70 and 238.53

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Solution

The fourth proportional to 276.60, 414.70 and 238.53 is: 357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.60 : 414.70 = 238.53 : x
  2. Step 2: Convert to fraction form
    276.60/414.70 = 238.53/x
  3. Step 3: Cross multiply
    276.60x = 414.70 × 238.53
  4. Step 4: Simplify right side
    276.60x = 98,917.20
  5. Step 5: Solve for x
    x = 98,917.20/276.60
  6. Step 6: Final answer
    x = 357.62

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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.