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Finding the Fourth Proportional to 882.63, 1,322.67 and 686.73

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Solution

The fourth proportional to 882.63, 1,322.67 and 686.73 is: 1,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.63 : 1,322.67 = 686.73 : x
  2. Step 2: Convert to fraction form
    882.63/1,322.67 = 686.73/x
  3. Step 3: Cross multiply
    882.63x = 1,322.67 × 686.73
  4. Step 4: Simplify right side
    882.63x = 908,317.17
  5. Step 5: Solve for x
    x = 908,317.17/882.63
  6. Step 6: Final answer
    x = 1,029.10

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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.