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Finding the Fourth Proportional to 345.96, 474.04 and 342.76

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Solution

The fourth proportional to 345.96, 474.04 and 342.76 is: 469.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.96 : 474.04 = 342.76 : x
  2. Step 2: Convert to fraction form
    345.96/474.04 = 342.76/x
  3. Step 3: Cross multiply
    345.96x = 474.04 × 342.76
  4. Step 4: Simplify right side
    345.96x = 162,481.95
  5. Step 5: Solve for x
    x = 162,481.95/345.96
  6. Step 6: Final answer
    x = 469.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.