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Finding the Fourth Proportional to 342.68, 512.94 and 270.68

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Solution

The fourth proportional to 342.68, 512.94 and 270.68 is: 405.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.68 : 512.94 = 270.68 : x
  2. Step 2: Convert to fraction form
    342.68/512.94 = 270.68/x
  3. Step 3: Cross multiply
    342.68x = 512.94 × 270.68
  4. Step 4: Simplify right side
    342.68x = 138,842.60
  5. Step 5: Solve for x
    x = 138,842.60/342.68
  6. Step 6: Final answer
    x = 405.17

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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.