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Finding the Fourth Proportional to 341.92, 512.20 and 313.92

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Solution

The fourth proportional to 341.92, 512.20 and 313.92 is: 470.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.92 : 512.20 = 313.92 : x
  2. Step 2: Convert to fraction form
    341.92/512.20 = 313.92/x
  3. Step 3: Cross multiply
    341.92x = 512.20 × 313.92
  4. Step 4: Simplify right side
    341.92x = 160,789.82
  5. Step 5: Solve for x
    x = 160,789.82/341.92
  6. Step 6: Final answer
    x = 470.26

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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.