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Finding the Fourth Proportional to 634.33, 946.90 and 548.22

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Solution

The fourth proportional to 634.33, 946.90 and 548.22 is: 818.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.33 : 946.90 = 548.22 : x
  2. Step 2: Convert to fraction form
    634.33/946.90 = 548.22/x
  3. Step 3: Cross multiply
    634.33x = 946.90 × 548.22
  4. Step 4: Simplify right side
    634.33x = 519,109.52
  5. Step 5: Solve for x
    x = 519,109.52/634.33
  6. Step 6: Final answer
    x = 818.36

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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.