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Finding the Fourth Proportional to 276.66, 415.30 and 114.46

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Solution

The fourth proportional to 276.66, 415.30 and 114.46 is: 171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.66 : 415.30 = 114.46 : x
  2. Step 2: Convert to fraction form
    276.66/415.30 = 114.46/x
  3. Step 3: Cross multiply
    276.66x = 415.30 × 114.46
  4. Step 4: Simplify right side
    276.66x = 47,535.24
  5. Step 5: Solve for x
    x = 47,535.24/276.66
  6. Step 6: Final answer
    x = 171.82

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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.