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Finding the Fourth Proportional to 1,568.34, 2,353.20 and 747.21

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Solution

The fourth proportional to 1,568.34, 2,353.20 and 747.21 is: 1,121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.34 : 2,353.20 = 747.21 : x
  2. Step 2: Convert to fraction form
    1,568.34/2,353.20 = 747.21/x
  3. Step 3: Cross multiply
    1,568.34x = 2,353.20 × 747.21
  4. Step 4: Simplify right side
    1,568.34x = 1,758,334.57
  5. Step 5: Solve for x
    x = 1,758,334.57/1,568.34
  6. Step 6: Final answer
    x = 1,121.14

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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.