Home / 749.03-1,122.77-255.28

Finding the Fourth Proportional to 749.03, 1,122.77 and 255.28

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Solution

The fourth proportional to 749.03, 1,122.77 and 255.28 is: 382.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.03 : 1,122.77 = 255.28 : x
  2. Step 2: Convert to fraction form
    749.03/1,122.77 = 255.28/x
  3. Step 3: Cross multiply
    749.03x = 1,122.77 × 255.28
  4. Step 4: Simplify right side
    749.03x = 286,613.84
  5. Step 5: Solve for x
    x = 286,613.84/749.03
  6. Step 6: Final answer
    x = 382.65

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1.5x scale

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.