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Finding the Fourth Proportional to 1,761.60, 2,642.76 and 607.44

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Solution

The fourth proportional to 1,761.60, 2,642.76 and 607.44 is: 911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.60 : 2,642.76 = 607.44 : x
  2. Step 2: Convert to fraction form
    1,761.60/2,642.76 = 607.44/x
  3. Step 3: Cross multiply
    1,761.60x = 2,642.76 × 607.44
  4. Step 4: Simplify right side
    1,761.60x = 1,605,318.13
  5. Step 5: Solve for x
    x = 1,605,318.13/1,761.60
  6. Step 6: Final answer
    x = 911.28

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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.