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Finding the Fourth Proportional to 1,432.89, 2,149.06 and 652.67

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Solution

The fourth proportional to 1,432.89, 2,149.06 and 652.67 is: 978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.89 : 2,149.06 = 652.67 : x
  2. Step 2: Convert to fraction form
    1,432.89/2,149.06 = 652.67/x
  3. Step 3: Cross multiply
    1,432.89x = 2,149.06 × 652.67
  4. Step 4: Simplify right side
    1,432.89x = 1,402,630.73
  5. Step 5: Solve for x
    x = 1,402,630.73/1,432.89
  6. Step 6: Final answer
    x = 978.88

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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.