Home / 1,147.04-1,720.72-325.30

Finding the Fourth Proportional to 1,147.04, 1,720.72 and 325.30

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Solution

The fourth proportional to 1,147.04, 1,720.72 and 325.30 is: 487.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.04 : 1,720.72 = 325.30 : x
  2. Step 2: Convert to fraction form
    1,147.04/1,720.72 = 325.30/x
  3. Step 3: Cross multiply
    1,147.04x = 1,720.72 × 325.30
  4. Step 4: Simplify right side
    1,147.04x = 559,745.10
  5. Step 5: Solve for x
    x = 559,745.10/1,147.04
  6. Step 6: Final answer
    x = 487.99

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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.