Home / 1,147.03-1,719.36-453.42

Finding the Fourth Proportional to 1,147.03, 1,719.36 and 453.42

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Solution

The fourth proportional to 1,147.03, 1,719.36 and 453.42 is: 679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.03 : 1,719.36 = 453.42 : x
  2. Step 2: Convert to fraction form
    1,147.03/1,719.36 = 453.42/x
  3. Step 3: Cross multiply
    1,147.03x = 1,719.36 × 453.42
  4. Step 4: Simplify right side
    1,147.03x = 779,583.61
  5. Step 5: Solve for x
    x = 779,583.61/1,147.03
  6. Step 6: Final answer
    x = 679.65

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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.