Home / 1,040.11-1,560.62-553.20

Finding the Fourth Proportional to 1,040.11, 1,560.62 and 553.20

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Solution

The fourth proportional to 1,040.11, 1,560.62 and 553.20 is: 830.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.11 : 1,560.62 = 553.20 : x
  2. Step 2: Convert to fraction form
    1,040.11/1,560.62 = 553.20/x
  3. Step 3: Cross multiply
    1,040.11x = 1,560.62 × 553.20
  4. Step 4: Simplify right side
    1,040.11x = 863,334.98
  5. Step 5: Solve for x
    x = 863,334.98/1,040.11
  6. Step 6: Final answer
    x = 830.04

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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.