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Finding the Fourth Proportional to 345.92, 477.22 and 339.44

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Solution

The fourth proportional to 345.92, 477.22 and 339.44 is: 468.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.92 : 477.22 = 339.44 : x
  2. Step 2: Convert to fraction form
    345.92/477.22 = 339.44/x
  3. Step 3: Cross multiply
    345.92x = 477.22 × 339.44
  4. Step 4: Simplify right side
    345.92x = 161,987.56
  5. Step 5: Solve for x
    x = 161,987.56/345.92
  6. Step 6: Final answer
    x = 468.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.