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Finding the Fourth Proportional to 475.98, 657.27 and 345.66

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Solution

The fourth proportional to 475.98, 657.27 and 345.66 is: 477.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.98 : 657.27 = 345.66 : x
  2. Step 2: Convert to fraction form
    475.98/657.27 = 345.66/x
  3. Step 3: Cross multiply
    475.98x = 657.27 × 345.66
  4. Step 4: Simplify right side
    475.98x = 227,191.95
  5. Step 5: Solve for x
    x = 227,191.95/475.98
  6. Step 6: Final answer
    x = 477.31

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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.