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Finding the Fourth Proportional to 1,494.62, 2,238.85 and 876.45

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Solution

The fourth proportional to 1,494.62, 2,238.85 and 876.45 is: 1,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.62 : 2,238.85 = 876.45 : x
  2. Step 2: Convert to fraction form
    1,494.62/2,238.85 = 876.45/x
  3. Step 3: Cross multiply
    1,494.62x = 2,238.85 × 876.45
  4. Step 4: Simplify right side
    1,494.62x = 1,962,235.70
  5. Step 5: Solve for x
    x = 1,962,235.70/1,494.62
  6. Step 6: Final answer
    x = 1,312.87

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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.