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Finding the Fourth Proportional to 1,375.06, 2,061.84 and 552.91

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Solution

The fourth proportional to 1,375.06, 2,061.84 and 552.91 is: 829.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.06 : 2,061.84 = 552.91 : x
  2. Step 2: Convert to fraction form
    1,375.06/2,061.84 = 552.91/x
  3. Step 3: Cross multiply
    1,375.06x = 2,061.84 × 552.91
  4. Step 4: Simplify right side
    1,375.06x = 1,140,011.95
  5. Step 5: Solve for x
    x = 1,140,011.95/1,375.06
  6. Step 6: Final answer
    x = 829.06

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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.