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Finding the Fourth Proportional to 1,241.68, 1,862.20 and 753.04

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Solution

The fourth proportional to 1,241.68, 1,862.20 and 753.04 is: 1,129.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.68 : 1,862.20 = 753.04 : x
  2. Step 2: Convert to fraction form
    1,241.68/1,862.20 = 753.04/x
  3. Step 3: Cross multiply
    1,241.68x = 1,862.20 × 753.04
  4. Step 4: Simplify right side
    1,241.68x = 1,402,311.09
  5. Step 5: Solve for x
    x = 1,402,311.09/1,241.68
  6. Step 6: Final answer
    x = 1,129.37

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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.