Home / 1,165.25-1,748.15-343.55

Finding the Fourth Proportional to 1,165.25, 1,748.15 and 343.55

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Solution

The fourth proportional to 1,165.25, 1,748.15 and 343.55 is: 515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.25 : 1,748.15 = 343.55 : x
  2. Step 2: Convert to fraction form
    1,165.25/1,748.15 = 343.55/x
  3. Step 3: Cross multiply
    1,165.25x = 1,748.15 × 343.55
  4. Step 4: Simplify right side
    1,165.25x = 600,566.47
  5. Step 5: Solve for x
    x = 600,566.47/1,165.25
  6. Step 6: Final answer
    x = 515.40

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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.