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Finding the Fourth Proportional to 2,220.60, 3,328.61 and 832.97

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Solution

The fourth proportional to 2,220.60, 3,328.61 and 832.97 is: 1,248.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.60 : 3,328.61 = 832.97 : x
  2. Step 2: Convert to fraction form
    2,220.60/3,328.61 = 832.97/x
  3. Step 3: Cross multiply
    2,220.60x = 3,328.61 × 832.97
  4. Step 4: Simplify right side
    2,220.60x = 2,772,611.46
  5. Step 5: Solve for x
    x = 2,772,611.46/2,220.60
  6. Step 6: Final answer
    x = 1,248.59

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1.5x scale

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.