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Finding the Fourth Proportional to 1,550.80, 2,140.08 and 852.20

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Solution

The fourth proportional to 1,550.80, 2,140.08 and 852.20 is: 1,176.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.80 : 2,140.08 = 852.20 : x
  2. Step 2: Convert to fraction form
    1,550.80/2,140.08 = 852.20/x
  3. Step 3: Cross multiply
    1,550.80x = 2,140.08 × 852.20
  4. Step 4: Simplify right side
    1,550.80x = 1,823,776.18
  5. Step 5: Solve for x
    x = 1,823,776.18/1,550.80
  6. Step 6: Final answer
    x = 1,176.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.