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Finding the Fourth Proportional to 882.47, 1,321.25 and 573.55

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Solution

The fourth proportional to 882.47, 1,321.25 and 573.55 is: 858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.47 : 1,321.25 = 573.55 : x
  2. Step 2: Convert to fraction form
    882.47/1,321.25 = 573.55/x
  3. Step 3: Cross multiply
    882.47x = 1,321.25 × 573.55
  4. Step 4: Simplify right side
    882.47x = 757,796.77
  5. Step 5: Solve for x
    x = 757,796.77/882.47
  6. Step 6: Final answer
    x = 858.72

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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.