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Finding the Fourth Proportional to 341.29, 511.63 and 178.78

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Solution

The fourth proportional to 341.29, 511.63 and 178.78 is: 268.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.29 : 511.63 = 178.78 : x
  2. Step 2: Convert to fraction form
    341.29/511.63 = 178.78/x
  3. Step 3: Cross multiply
    341.29x = 511.63 × 178.78
  4. Step 4: Simplify right side
    341.29x = 91,469.21
  5. Step 5: Solve for x
    x = 91,469.21/341.29
  6. Step 6: Final answer
    x = 268.01

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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.