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Finding the Fourth Proportional to 882.11, 1,218.89 and 632.99

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Solution

The fourth proportional to 882.11, 1,218.89 and 632.99 is: 874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.11 : 1,218.89 = 632.99 : x
  2. Step 2: Convert to fraction form
    882.11/1,218.89 = 632.99/x
  3. Step 3: Cross multiply
    882.11x = 1,218.89 × 632.99
  4. Step 4: Simplify right side
    882.11x = 771,545.24
  5. Step 5: Solve for x
    x = 771,545.24/882.11
  6. Step 6: Final answer
    x = 874.66

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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.