Home / 1,155.14-1,733.49-425.30

Finding the Fourth Proportional to 1,155.14, 1,733.49 and 425.30

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Solution

The fourth proportional to 1,155.14, 1,733.49 and 425.30 is: 638.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.14 : 1,733.49 = 425.30 : x
  2. Step 2: Convert to fraction form
    1,155.14/1,733.49 = 425.30/x
  3. Step 3: Cross multiply
    1,155.14x = 1,733.49 × 425.30
  4. Step 4: Simplify right side
    1,155.14x = 737,253.30
  5. Step 5: Solve for x
    x = 737,253.30/1,155.14
  6. Step 6: Final answer
    x = 638.24

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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.