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Finding the Fourth Proportional to 247.59, 373.55 and 220.86

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Solution

The fourth proportional to 247.59, 373.55 and 220.86 is: 333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.59 : 373.55 = 220.86 : x
  2. Step 2: Convert to fraction form
    247.59/373.55 = 220.86/x
  3. Step 3: Cross multiply
    247.59x = 373.55 × 220.86
  4. Step 4: Simplify right side
    247.59x = 82,501.15
  5. Step 5: Solve for x
    x = 82,501.15/247.59
  6. Step 6: Final answer
    x = 333.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.