Home / 1,057.12-1,459.05-615.28

Finding the Fourth Proportional to 1,057.12, 1,459.05 and 615.28

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Solution

The fourth proportional to 1,057.12, 1,459.05 and 615.28 is: 849.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.12 : 1,459.05 = 615.28 : x
  2. Step 2: Convert to fraction form
    1,057.12/1,459.05 = 615.28/x
  3. Step 3: Cross multiply
    1,057.12x = 1,459.05 × 615.28
  4. Step 4: Simplify right side
    1,057.12x = 897,716.99
  5. Step 5: Solve for x
    x = 897,716.99/1,057.12
  6. Step 6: Final answer
    x = 849.21

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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.