Home / 1,146.52-1,719.87-324.79

Finding the Fourth Proportional to 1,146.52, 1,719.87 and 324.79

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Solution

The fourth proportional to 1,146.52, 1,719.87 and 324.79 is: 487.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.52 : 1,719.87 = 324.79 : x
  2. Step 2: Convert to fraction form
    1,146.52/1,719.87 = 324.79/x
  3. Step 3: Cross multiply
    1,146.52x = 1,719.87 × 324.79
  4. Step 4: Simplify right side
    1,146.52x = 558,596.58
  5. Step 5: Solve for x
    x = 558,596.58/1,146.52
  6. Step 6: Final answer
    x = 487.21

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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.