Home / 1,147.46-1,721.14-325.71

Finding the Fourth Proportional to 1,147.46, 1,721.14 and 325.71

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Solution

The fourth proportional to 1,147.46, 1,721.14 and 325.71 is: 488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.46 : 1,721.14 = 325.71 : x
  2. Step 2: Convert to fraction form
    1,147.46/1,721.14 = 325.71/x
  3. Step 3: Cross multiply
    1,147.46x = 1,721.14 × 325.71
  4. Step 4: Simplify right side
    1,147.46x = 560,592.51
  5. Step 5: Solve for x
    x = 560,592.51/1,147.46
  6. Step 6: Final answer
    x = 488.55

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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.