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Finding the Fourth Proportional to 1,195.68, 1,649.96 and 752.88

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Solution

The fourth proportional to 1,195.68, 1,649.96 and 752.88 is: 1,038.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.68 : 1,649.96 = 752.88 : x
  2. Step 2: Convert to fraction form
    1,195.68/1,649.96 = 752.88/x
  3. Step 3: Cross multiply
    1,195.68x = 1,649.96 × 752.88
  4. Step 4: Simplify right side
    1,195.68x = 1,242,221.88
  5. Step 5: Solve for x
    x = 1,242,221.88/1,195.68
  6. Step 6: Final answer
    x = 1,038.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.