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Finding the Fourth Proportional to 131.84, 182.28 and 126

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Solution

The fourth proportional to 131.84, 182.28 and 126 is: 174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.84 : 182.28 = 126 : x
  2. Step 2: Convert to fraction form
    131.84/182.28 = 126/x
  3. Step 3: Cross multiply
    131.84x = 182.28 × 126
  4. Step 4: Simplify right side
    131.84x = 22,967.28
  5. Step 5: Solve for x
    x = 22,967.28/131.84
  6. Step 6: Final answer
    x = 174.21

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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.