Home / 1,147.19-1,720.80-325.49

Finding the Fourth Proportional to 1,147.19, 1,720.80 and 325.49

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Solution

The fourth proportional to 1,147.19, 1,720.80 and 325.49 is: 488.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.19 : 1,720.80 = 325.49 : x
  2. Step 2: Convert to fraction form
    1,147.19/1,720.80 = 325.49/x
  3. Step 3: Cross multiply
    1,147.19x = 1,720.80 × 325.49
  4. Step 4: Simplify right side
    1,147.19x = 560,094.59
  5. Step 5: Solve for x
    x = 560,094.59/1,147.19
  6. Step 6: Final answer
    x = 488.23

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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.