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Finding the Fourth Proportional to 343.32, 515.46 and 266.32

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Solution

The fourth proportional to 343.32, 515.46 and 266.32 is: 399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.32 : 515.46 = 266.32 : x
  2. Step 2: Convert to fraction form
    343.32/515.46 = 266.32/x
  3. Step 3: Cross multiply
    343.32x = 515.46 × 266.32
  4. Step 4: Simplify right side
    343.32x = 137,277.31
  5. Step 5: Solve for x
    x = 137,277.31/343.32
  6. Step 6: Final answer
    x = 399.85

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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.