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Finding the Fourth Proportional to 639.96, 958.11 and 588.93

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Solution

The fourth proportional to 639.96, 958.11 and 588.93 is: 881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.96 : 958.11 = 588.93 : x
  2. Step 2: Convert to fraction form
    639.96/958.11 = 588.93/x
  3. Step 3: Cross multiply
    639.96x = 958.11 × 588.93
  4. Step 4: Simplify right side
    639.96x = 564,259.72
  5. Step 5: Solve for x
    x = 564,259.72/639.96
  6. Step 6: Final answer
    x = 881.71

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.