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Finding the Fourth Proportional to 749.24, 1,124.13 and 718.19

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Solution

The fourth proportional to 749.24, 1,124.13 and 718.19 is: 1,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.24 : 1,124.13 = 718.19 : x
  2. Step 2: Convert to fraction form
    749.24/1,124.13 = 718.19/x
  3. Step 3: Cross multiply
    749.24x = 1,124.13 × 718.19
  4. Step 4: Simplify right side
    749.24x = 807,338.92
  5. Step 5: Solve for x
    x = 807,338.92/749.24
  6. Step 6: Final answer
    x = 1,077.54

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Double scale
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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.