Home / 1,040.93-1,561.56-310.43

Finding the Fourth Proportional to 1,040.93, 1,561.56 and 310.43

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Solution

The fourth proportional to 1,040.93, 1,561.56 and 310.43 is: 465.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.93 : 1,561.56 = 310.43 : x
  2. Step 2: Convert to fraction form
    1,040.93/1,561.56 = 310.43/x
  3. Step 3: Cross multiply
    1,040.93x = 1,561.56 × 310.43
  4. Step 4: Simplify right side
    1,040.93x = 484,755.07
  5. Step 5: Solve for x
    x = 484,755.07/1,040.93
  6. Step 6: Final answer
    x = 465.69

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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.