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Finding the Fourth Proportional to 882.90, 1,326.39 and 554.85

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Solution

The fourth proportional to 882.90, 1,326.39 and 554.85 is: 833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.90 : 1,326.39 = 554.85 : x
  2. Step 2: Convert to fraction form
    882.90/1,326.39 = 554.85/x
  3. Step 3: Cross multiply
    882.90x = 1,326.39 × 554.85
  4. Step 4: Simplify right side
    882.90x = 735,947.49
  5. Step 5: Solve for x
    x = 735,947.49/882.90
  6. Step 6: Final answer
    x = 833.56

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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.