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Finding the Fourth Proportional to 1,462.80, 2,195.72 and 847.70

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Solution

The fourth proportional to 1,462.80, 2,195.72 and 847.70 is: 1,272.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,462.80 : 2,195.72 = 847.70 : x
  2. Step 2: Convert to fraction form
    1,462.80/2,195.72 = 847.70/x
  3. Step 3: Cross multiply
    1,462.80x = 2,195.72 × 847.70
  4. Step 4: Simplify right side
    1,462.80x = 1,861,307.61
  5. Step 5: Solve for x
    x = 1,861,307.61/1,462.80
  6. Step 6: Final answer
    x = 1,272.43

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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.