Home / 1,154.31-1,731.25-451.23

Finding the Fourth Proportional to 1,154.31, 1,731.25 and 451.23

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Solution

The fourth proportional to 1,154.31, 1,731.25 and 451.23 is: 676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.31 : 1,731.25 = 451.23 : x
  2. Step 2: Convert to fraction form
    1,154.31/1,731.25 = 451.23/x
  3. Step 3: Cross multiply
    1,154.31x = 1,731.25 × 451.23
  4. Step 4: Simplify right side
    1,154.31x = 781,191.94
  5. Step 5: Solve for x
    x = 781,191.94/1,154.31
  6. Step 6: Final answer
    x = 676.76

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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.