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Finding the Fourth Proportional to 1,472.55, 2,032.16 and 809.42

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Solution

The fourth proportional to 1,472.55, 2,032.16 and 809.42 is: 1,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.55 : 2,032.16 = 809.42 : x
  2. Step 2: Convert to fraction form
    1,472.55/2,032.16 = 809.42/x
  3. Step 3: Cross multiply
    1,472.55x = 2,032.16 × 809.42
  4. Step 4: Simplify right side
    1,472.55x = 1,644,856.74
  5. Step 5: Solve for x
    x = 1,644,856.74/1,472.55
  6. Step 6: Final answer
    x = 1,117.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.