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Finding the Fourth Proportional to 634.95, 952.34 and 172.76

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Solution

The fourth proportional to 634.95, 952.34 and 172.76 is: 259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.95 : 952.34 = 172.76 : x
  2. Step 2: Convert to fraction form
    634.95/952.34 = 172.76/x
  3. Step 3: Cross multiply
    634.95x = 952.34 × 172.76
  4. Step 4: Simplify right side
    634.95x = 164,520.63
  5. Step 5: Solve for x
    x = 164,520.63/634.95
  6. Step 6: Final answer
    x = 259.11

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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.