Home / 1,029.30-1,542.15-845.70

Finding the Fourth Proportional to 1,029.30, 1,542.15 and 845.70

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Solution

The fourth proportional to 1,029.30, 1,542.15 and 845.70 is: 1,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.30 : 1,542.15 = 845.70 : x
  2. Step 2: Convert to fraction form
    1,029.30/1,542.15 = 845.70/x
  3. Step 3: Cross multiply
    1,029.30x = 1,542.15 × 845.70
  4. Step 4: Simplify right side
    1,029.30x = 1,304,196.26
  5. Step 5: Solve for x
    x = 1,304,196.26/1,029.30
  6. Step 6: Final answer
    x = 1,267.07

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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.