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Finding the Fourth Proportional to 341.97, 512.97 and 318.81

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Solution

The fourth proportional to 341.97, 512.97 and 318.81 is: 478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.97 : 512.97 = 318.81 : x
  2. Step 2: Convert to fraction form
    341.97/512.97 = 318.81/x
  3. Step 3: Cross multiply
    341.97x = 512.97 × 318.81
  4. Step 4: Simplify right side
    341.97x = 163,539.97
  5. Step 5: Solve for x
    x = 163,539.97/341.97
  6. Step 6: Final answer
    x = 478.23

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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.