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Finding the Fourth Proportional to 1,683.28, 2,523.30 and 708.85

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Solution

The fourth proportional to 1,683.28, 2,523.30 and 708.85 is: 1,062.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.28 : 2,523.30 = 708.85 : x
  2. Step 2: Convert to fraction form
    1,683.28/2,523.30 = 708.85/x
  3. Step 3: Cross multiply
    1,683.28x = 2,523.30 × 708.85
  4. Step 4: Simplify right side
    1,683.28x = 1,788,641.21
  5. Step 5: Solve for x
    x = 1,788,641.21/1,683.28
  6. Step 6: Final answer
    x = 1,062.59

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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.