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Finding the Fourth Proportional to 143.77, 214.44 and 126.46

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Solution

The fourth proportional to 143.77, 214.44 and 126.46 is: 188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.77 : 214.44 = 126.46 : x
  2. Step 2: Convert to fraction form
    143.77/214.44 = 126.46/x
  3. Step 3: Cross multiply
    143.77x = 214.44 × 126.46
  4. Step 4: Simplify right side
    143.77x = 27,118.08
  5. Step 5: Solve for x
    x = 27,118.08/143.77
  6. Step 6: Final answer
    x = 188.62

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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.