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Finding the Fourth Proportional to 1,549.80, 2,324.70 and 780.12

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Solution

The fourth proportional to 1,549.80, 2,324.70 and 780.12 is: 1,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.80 : 2,324.70 = 780.12 : x
  2. Step 2: Convert to fraction form
    1,549.80/2,324.70 = 780.12/x
  3. Step 3: Cross multiply
    1,549.80x = 2,324.70 × 780.12
  4. Step 4: Simplify right side
    1,549.80x = 1,813,544.96
  5. Step 5: Solve for x
    x = 1,813,544.96/1,549.80
  6. Step 6: Final answer
    x = 1,170.18

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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.