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Finding the Fourth Proportional to 1,761.48, 2,642.21 and 528.88

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Solution

The fourth proportional to 1,761.48, 2,642.21 and 528.88 is: 793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.48 : 2,642.21 = 528.88 : x
  2. Step 2: Convert to fraction form
    1,761.48/2,642.21 = 528.88/x
  3. Step 3: Cross multiply
    1,761.48x = 2,642.21 × 528.88
  4. Step 4: Simplify right side
    1,761.48x = 1,397,414.67
  5. Step 5: Solve for x
    x = 1,397,414.67/1,761.48
  6. Step 6: Final answer
    x = 793.32

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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.