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Finding the Fourth Proportional to 1,472.41, 2,031.95 and 809.34

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Solution

The fourth proportional to 1,472.41, 2,031.95 and 809.34 is: 1,116.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.41 : 2,031.95 = 809.34 : x
  2. Step 2: Convert to fraction form
    1,472.41/2,031.95 = 809.34/x
  3. Step 3: Cross multiply
    1,472.41x = 2,031.95 × 809.34
  4. Step 4: Simplify right side
    1,472.41x = 1,644,538.41
  5. Step 5: Solve for x
    x = 1,644,538.41/1,472.41
  6. Step 6: Final answer
    x = 1,116.90

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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.