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Finding the Fourth Proportional to 1,195.28, 1,648.68 and 753.74

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Solution

The fourth proportional to 1,195.28, 1,648.68 and 753.74 is: 1,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.28 : 1,648.68 = 753.74 : x
  2. Step 2: Convert to fraction form
    1,195.28/1,648.68 = 753.74/x
  3. Step 3: Cross multiply
    1,195.28x = 1,648.68 × 753.74
  4. Step 4: Simplify right side
    1,195.28x = 1,242,676.06
  5. Step 5: Solve for x
    x = 1,242,676.06/1,195.28
  6. Step 6: Final answer
    x = 1,039.65

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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.