Home / 1,161.15-1,741.55-339.20

Finding the Fourth Proportional to 1,161.15, 1,741.55 and 339.20

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Solution

The fourth proportional to 1,161.15, 1,741.55 and 339.20 is: 508.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.15 : 1,741.55 = 339.20 : x
  2. Step 2: Convert to fraction form
    1,161.15/1,741.55 = 339.20/x
  3. Step 3: Cross multiply
    1,161.15x = 1,741.55 × 339.20
  4. Step 4: Simplify right side
    1,161.15x = 590,733.76
  5. Step 5: Solve for x
    x = 590,733.76/1,161.15
  6. Step 6: Final answer
    x = 508.75

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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.