Home / 1,145.13-1,717.45-323.18

Finding the Fourth Proportional to 1,145.13, 1,717.45 and 323.18

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Solution

The fourth proportional to 1,145.13, 1,717.45 and 323.18 is: 484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.13 : 1,717.45 = 323.18 : x
  2. Step 2: Convert to fraction form
    1,145.13/1,717.45 = 323.18/x
  3. Step 3: Cross multiply
    1,145.13x = 1,717.45 × 323.18
  4. Step 4: Simplify right side
    1,145.13x = 555,049.18
  5. Step 5: Solve for x
    x = 555,049.18/1,145.13
  6. Step 6: Final answer
    x = 484.70

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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.