Home / 751.08-1,126.24-318.12

Finding the Fourth Proportional to 751.08, 1,126.24 and 318.12

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Solution

The fourth proportional to 751.08, 1,126.24 and 318.12 is: 477.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.08 : 1,126.24 = 318.12 : x
  2. Step 2: Convert to fraction form
    751.08/1,126.24 = 318.12/x
  3. Step 3: Cross multiply
    751.08x = 1,126.24 × 318.12
  4. Step 4: Simplify right side
    751.08x = 358,279.47
  5. Step 5: Solve for x
    x = 358,279.47/751.08
  6. Step 6: Final answer
    x = 477.02

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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.