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Finding the Fourth Proportional to 872.23, 1,308.33 and 223.01

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Solution

The fourth proportional to 872.23, 1,308.33 and 223.01 is: 334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    872.23 : 1,308.33 = 223.01 : x
  2. Step 2: Convert to fraction form
    872.23/1,308.33 = 223.01/x
  3. Step 3: Cross multiply
    872.23x = 1,308.33 × 223.01
  4. Step 4: Simplify right side
    872.23x = 291,770.67
  5. Step 5: Solve for x
    x = 291,770.67/872.23
  6. Step 6: Final answer
    x = 334.51

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Double scale
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Similar ratio
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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.