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Finding the Fourth Proportional to 742.26, 1,113.56 and 222.30

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Solution

The fourth proportional to 742.26, 1,113.56 and 222.30 is: 333.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.26 : 1,113.56 = 222.30 : x
  2. Step 2: Convert to fraction form
    742.26/1,113.56 = 222.30/x
  3. Step 3: Cross multiply
    742.26x = 1,113.56 × 222.30
  4. Step 4: Simplify right side
    742.26x = 247,544.39
  5. Step 5: Solve for x
    x = 247,544.39/742.26
  6. Step 6: Final answer
    x = 333.50

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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.