Home / 1,041.10-1,561.20-310.53

Finding the Fourth Proportional to 1,041.10, 1,561.20 and 310.53

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Solution

The fourth proportional to 1,041.10, 1,561.20 and 310.53 is: 465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.10 : 1,561.20 = 310.53 : x
  2. Step 2: Convert to fraction form
    1,041.10/1,561.20 = 310.53/x
  3. Step 3: Cross multiply
    1,041.10x = 1,561.20 × 310.53
  4. Step 4: Simplify right side
    1,041.10x = 484,805.00
  5. Step 5: Solve for x
    x = 484,805.00/1,041.10
  6. Step 6: Final answer
    x = 465.66

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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.