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Finding the Fourth Proportional to 143.73, 214.37 and 141.30

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Solution

The fourth proportional to 143.73, 214.37 and 141.30 is: 210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.73 : 214.37 = 141.30 : x
  2. Step 2: Convert to fraction form
    143.73/214.37 = 141.30/x
  3. Step 3: Cross multiply
    143.73x = 214.37 × 141.30
  4. Step 4: Simplify right side
    143.73x = 30,289.77
  5. Step 5: Solve for x
    x = 30,289.77/143.73
  6. Step 6: Final answer
    x = 210.74

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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.