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Finding the Fourth Proportional to 882.79, 1,324.41 and 266.71

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Solution

The fourth proportional to 882.79, 1,324.41 and 266.71 is: 400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.79 : 1,324.41 = 266.71 : x
  2. Step 2: Convert to fraction form
    882.79/1,324.41 = 266.71/x
  3. Step 3: Cross multiply
    882.79x = 1,324.41 × 266.71
  4. Step 4: Simplify right side
    882.79x = 353,233.39
  5. Step 5: Solve for x
    x = 353,233.39/882.79
  6. Step 6: Final answer
    x = 400.13

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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.