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Finding the Fourth Proportional to 421.32, 581.38 and 244.25

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Solution

The fourth proportional to 421.32, 581.38 and 244.25 is: 337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421.32 : 581.38 = 244.25 : x
  2. Step 2: Convert to fraction form
    421.32/581.38 = 244.25/x
  3. Step 3: Cross multiply
    421.32x = 581.38 × 244.25
  4. Step 4: Simplify right side
    421.32x = 142,003.18
  5. Step 5: Solve for x
    x = 142,003.18/421.32
  6. Step 6: Final answer
    x = 337.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.