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Finding the Fourth Proportional to 421.27, 581.33 and 244.23

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Solution

The fourth proportional to 421.27, 581.33 and 244.23 is: 337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421.27 : 581.33 = 244.23 : x
  2. Step 2: Convert to fraction form
    421.27/581.33 = 244.23/x
  3. Step 3: Cross multiply
    421.27x = 581.33 × 244.23
  4. Step 4: Simplify right side
    421.27x = 141,978.55
  5. Step 5: Solve for x
    x = 141,978.55/421.27
  6. Step 6: Final answer
    x = 337.03

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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.