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Finding the Fourth Proportional to 639.88, 958.56 and 594.88

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Solution

The fourth proportional to 639.88, 958.56 and 594.88 is: 891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.88 : 958.56 = 594.88 : x
  2. Step 2: Convert to fraction form
    639.88/958.56 = 594.88/x
  3. Step 3: Cross multiply
    639.88x = 958.56 × 594.88
  4. Step 4: Simplify right side
    639.88x = 570,228.17
  5. Step 5: Solve for x
    x = 570,228.17/639.88
  6. Step 6: Final answer
    x = 891.15

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Why These Related Problems?

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