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Finding the Fourth Proportional to 634.49, 950.18 and 438.96

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Solution

The fourth proportional to 634.49, 950.18 and 438.96 is: 657.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.49 : 950.18 = 438.96 : x
  2. Step 2: Convert to fraction form
    634.49/950.18 = 438.96/x
  3. Step 3: Cross multiply
    634.49x = 950.18 × 438.96
  4. Step 4: Simplify right side
    634.49x = 417,088.82
  5. Step 5: Solve for x
    x = 417,088.82/634.49
  6. Step 6: Final answer
    x = 657.37

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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.