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Finding the Fourth Proportional to 671.98, 927.50 and 475.56

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Solution

The fourth proportional to 671.98, 927.50 and 475.56 is: 656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.98 : 927.50 = 475.56 : x
  2. Step 2: Convert to fraction form
    671.98/927.50 = 475.56/x
  3. Step 3: Cross multiply
    671.98x = 927.50 × 475.56
  4. Step 4: Simplify right side
    671.98x = 441,074.88
  5. Step 5: Solve for x
    x = 441,074.88/671.98
  6. Step 6: Final answer
    x = 656.38

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Double scale
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1.5x scale

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.