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Finding the Fourth Proportional to 701.69, 1,052.34 and 214.64

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Solution

The fourth proportional to 701.69, 1,052.34 and 214.64 is: 321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.69 : 1,052.34 = 214.64 : x
  2. Step 2: Convert to fraction form
    701.69/1,052.34 = 214.64/x
  3. Step 3: Cross multiply
    701.69x = 1,052.34 × 214.64
  4. Step 4: Simplify right side
    701.69x = 225,869.00
  5. Step 5: Solve for x
    x = 225,869.00/701.69
  6. Step 6: Final answer
    x = 321.90

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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.