Home / 1,040.26-1,560.40-492.30

Finding the Fourth Proportional to 1,040.26, 1,560.40 and 492.30

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Solution

The fourth proportional to 1,040.26, 1,560.40 and 492.30 is: 738.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.26 : 1,560.40 = 492.30 : x
  2. Step 2: Convert to fraction form
    1,040.26/1,560.40 = 492.30/x
  3. Step 3: Cross multiply
    1,040.26x = 1,560.40 × 492.30
  4. Step 4: Simplify right side
    1,040.26x = 768,184.92
  5. Step 5: Solve for x
    x = 768,184.92/1,040.26
  6. Step 6: Final answer
    x = 738.45

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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.