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Finding the Fourth Proportional to 634.98, 948.03 and 548.22

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Solution

The fourth proportional to 634.98, 948.03 and 548.22 is: 818.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.98 : 948.03 = 548.22 : x
  2. Step 2: Convert to fraction form
    634.98/948.03 = 548.22/x
  3. Step 3: Cross multiply
    634.98x = 948.03 × 548.22
  4. Step 4: Simplify right side
    634.98x = 519,729.01
  5. Step 5: Solve for x
    x = 519,729.01/634.98
  6. Step 6: Final answer
    x = 818.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.