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Finding the Fourth Proportional to 639.27, 882.33 and 373.86

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Solution

The fourth proportional to 639.27, 882.33 and 373.86 is: 516.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.27 : 882.33 = 373.86 : x
  2. Step 2: Convert to fraction form
    639.27/882.33 = 373.86/x
  3. Step 3: Cross multiply
    639.27x = 882.33 × 373.86
  4. Step 4: Simplify right side
    639.27x = 329,867.89
  5. Step 5: Solve for x
    x = 329,867.89/639.27
  6. Step 6: Final answer
    x = 516.01

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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.