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Finding the Fourth Proportional to 343.49, 515.52 and 180.99

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Solution

The fourth proportional to 343.49, 515.52 and 180.99 is: 271.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.49 : 515.52 = 180.99 : x
  2. Step 2: Convert to fraction form
    343.49/515.52 = 180.99/x
  3. Step 3: Cross multiply
    343.49x = 515.52 × 180.99
  4. Step 4: Simplify right side
    343.49x = 93,303.96
  5. Step 5: Solve for x
    x = 93,303.96/343.49
  6. Step 6: Final answer
    x = 271.64

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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.