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Finding the Fourth Proportional to 276.80, 415.10 and 94.16

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Solution

The fourth proportional to 276.80, 415.10 and 94.16 is: 141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.80 : 415.10 = 94.16 : x
  2. Step 2: Convert to fraction form
    276.80/415.10 = 94.16/x
  3. Step 3: Cross multiply
    276.80x = 415.10 × 94.16
  4. Step 4: Simplify right side
    276.80x = 39,085.82
  5. Step 5: Solve for x
    x = 39,085.82/276.80
  6. Step 6: Final answer
    x = 141.21

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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.