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Finding the Fourth Proportional to 1,472.96, 2,032.74 and 809.87

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Solution

The fourth proportional to 1,472.96, 2,032.74 and 809.87 is: 1,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.96 : 2,032.74 = 809.87 : x
  2. Step 2: Convert to fraction form
    1,472.96/2,032.74 = 809.87/x
  3. Step 3: Cross multiply
    1,472.96x = 2,032.74 × 809.87
  4. Step 4: Simplify right side
    1,472.96x = 1,646,251.09
  5. Step 5: Solve for x
    x = 1,646,251.09/1,472.96
  6. Step 6: Final answer
    x = 1,117.65

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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.