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Finding the Fourth Proportional to 1,462.91, 2,195.01 and 769.42

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Solution

The fourth proportional to 1,462.91, 2,195.01 and 769.42 is: 1,154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,462.91 : 2,195.01 = 769.42 : x
  2. Step 2: Convert to fraction form
    1,462.91/2,195.01 = 769.42/x
  3. Step 3: Cross multiply
    1,462.91x = 2,195.01 × 769.42
  4. Step 4: Simplify right side
    1,462.91x = 1,688,884.59
  5. Step 5: Solve for x
    x = 1,688,884.59/1,462.91
  6. Step 6: Final answer
    x = 1,154.47

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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.