Home / 1,039.27-1,557.56-422.25

Finding the Fourth Proportional to 1,039.27, 1,557.56 and 422.25

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Solution

The fourth proportional to 1,039.27, 1,557.56 and 422.25 is: 632.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.27 : 1,557.56 = 422.25 : x
  2. Step 2: Convert to fraction form
    1,039.27/1,557.56 = 422.25/x
  3. Step 3: Cross multiply
    1,039.27x = 1,557.56 × 422.25
  4. Step 4: Simplify right side
    1,039.27x = 657,677.60
  5. Step 5: Solve for x
    x = 657,677.60/1,039.27
  6. Step 6: Final answer
    x = 632.83

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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.