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Finding the Fourth Proportional to 1,646.24, 2,470.27 and 672.27

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Solution

The fourth proportional to 1,646.24, 2,470.27 and 672.27 is: 1,008.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.24 : 2,470.27 = 672.27 : x
  2. Step 2: Convert to fraction form
    1,646.24/2,470.27 = 672.27/x
  3. Step 3: Cross multiply
    1,646.24x = 2,470.27 × 672.27
  4. Step 4: Simplify right side
    1,646.24x = 1,660,688.41
  5. Step 5: Solve for x
    x = 1,660,688.41/1,646.24
  6. Step 6: Final answer
    x = 1,008.78

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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.