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Finding the Fourth Proportional to 639.73, 958.06 and 444.50

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Solution

The fourth proportional to 639.73, 958.06 and 444.50 is: 665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.73 : 958.06 = 444.50 : x
  2. Step 2: Convert to fraction form
    639.73/958.06 = 444.50/x
  3. Step 3: Cross multiply
    639.73x = 958.06 × 444.50
  4. Step 4: Simplify right side
    639.73x = 425,851.77
  5. Step 5: Solve for x
    x = 425,851.77/639.73
  6. Step 6: Final answer
    x = 665.67

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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.