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Finding the Fourth Proportional to 176.84, 243.94 and 125

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Solution

The fourth proportional to 176.84, 243.94 and 125 is: 172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.84 : 243.94 = 125 : x
  2. Step 2: Convert to fraction form
    176.84/243.94 = 125/x
  3. Step 3: Cross multiply
    176.84x = 243.94 × 125
  4. Step 4: Simplify right side
    176.84x = 30,492.50
  5. Step 5: Solve for x
    x = 30,492.50/176.84
  6. Step 6: Final answer
    x = 172.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.