Home / 1,255.15-1,732.28-1,045.02

Finding the Fourth Proportional to 1,255.15, 1,732.28 and 1,045.02

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Solution

The fourth proportional to 1,255.15, 1,732.28 and 1,045.02 is: 1,442.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.15 : 1,732.28 = 1,045.02 : x
  2. Step 2: Convert to fraction form
    1,255.15/1,732.28 = 1,045.02/x
  3. Step 3: Cross multiply
    1,255.15x = 1,732.28 × 1,045.02
  4. Step 4: Simplify right side
    1,255.15x = 1,810,267.25
  5. Step 5: Solve for x
    x = 1,810,267.25/1,255.15
  6. Step 6: Final answer
    x = 1,442.27

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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.