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Finding the Fourth Proportional to 882.43, 1,216.46 and 672.24

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Solution

The fourth proportional to 882.43, 1,216.46 and 672.24 is: 926.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.43 : 1,216.46 = 672.24 : x
  2. Step 2: Convert to fraction form
    882.43/1,216.46 = 672.24/x
  3. Step 3: Cross multiply
    882.43x = 1,216.46 × 672.24
  4. Step 4: Simplify right side
    882.43x = 817,753.07
  5. Step 5: Solve for x
    x = 817,753.07/882.43
  6. Step 6: Final answer
    x = 926.71

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1.5x scale

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.