Home / 1,165.19-1,748.18-343.64

Finding the Fourth Proportional to 1,165.19, 1,748.18 and 343.64

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Solution

The fourth proportional to 1,165.19, 1,748.18 and 343.64 is: 515.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.19 : 1,748.18 = 343.64 : x
  2. Step 2: Convert to fraction form
    1,165.19/1,748.18 = 343.64/x
  3. Step 3: Cross multiply
    1,165.19x = 1,748.18 × 343.64
  4. Step 4: Simplify right side
    1,165.19x = 600,749.80
  5. Step 5: Solve for x
    x = 600,749.80/1,165.19
  6. Step 6: Final answer
    x = 515.58

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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.