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Finding the Fourth Proportional to 143.11, 214.70 and 46.92

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Solution

The fourth proportional to 143.11, 214.70 and 46.92 is: 70.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.11 : 214.70 = 46.92 : x
  2. Step 2: Convert to fraction form
    143.11/214.70 = 46.92/x
  3. Step 3: Cross multiply
    143.11x = 214.70 × 46.92
  4. Step 4: Simplify right side
    143.11x = 10,074.14
  5. Step 5: Solve for x
    x = 10,074.14/143.11
  6. Step 6: Final answer
    x = 70.39

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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.