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Finding the Fourth Proportional to 346.88, 481.10 and 342.78

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Solution

The fourth proportional to 346.88, 481.10 and 342.78 is: 475.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.88 : 481.10 = 342.78 : x
  2. Step 2: Convert to fraction form
    346.88/481.10 = 342.78/x
  3. Step 3: Cross multiply
    346.88x = 481.10 × 342.78
  4. Step 4: Simplify right side
    346.88x = 164,913.06
  5. Step 5: Solve for x
    x = 164,913.06/346.88
  6. Step 6: Final answer
    x = 475.41

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.