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Finding the Fourth Proportional to 634.32, 950.66 and 548.20

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Solution

The fourth proportional to 634.32, 950.66 and 548.20 is: 821.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.32 : 950.66 = 548.20 : x
  2. Step 2: Convert to fraction form
    634.32/950.66 = 548.20/x
  3. Step 3: Cross multiply
    634.32x = 950.66 × 548.20
  4. Step 4: Simplify right side
    634.32x = 521,151.81
  5. Step 5: Solve for x
    x = 521,151.81/634.32
  6. Step 6: Final answer
    x = 821.59

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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.