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Finding the Fourth Proportional to 882.02, 1,321.17 and 555.80

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Solution

The fourth proportional to 882.02, 1,321.17 and 555.80 is: 832.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.02 : 1,321.17 = 555.80 : x
  2. Step 2: Convert to fraction form
    882.02/1,321.17 = 555.80/x
  3. Step 3: Cross multiply
    882.02x = 1,321.17 × 555.80
  4. Step 4: Simplify right side
    882.02x = 734,306.29
  5. Step 5: Solve for x
    x = 734,306.29/882.02
  6. Step 6: Final answer
    x = 832.53

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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.