Home / 1,057.26-1,459.20-615.42

Finding the Fourth Proportional to 1,057.26, 1,459.20 and 615.42

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Solution

The fourth proportional to 1,057.26, 1,459.20 and 615.42 is: 849.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.26 : 1,459.20 = 615.42 : x
  2. Step 2: Convert to fraction form
    1,057.26/1,459.20 = 615.42/x
  3. Step 3: Cross multiply
    1,057.26x = 1,459.20 × 615.42
  4. Step 4: Simplify right side
    1,057.26x = 898,020.86
  5. Step 5: Solve for x
    x = 898,020.86/1,057.26
  6. Step 6: Final answer
    x = 849.39

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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.