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Finding the Fourth Proportional to 672.10, 926.18 and 475.27

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Solution

The fourth proportional to 672.10, 926.18 and 475.27 is: 654.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.10 : 926.18 = 475.27 : x
  2. Step 2: Convert to fraction form
    672.10/926.18 = 475.27/x
  3. Step 3: Cross multiply
    672.10x = 926.18 × 475.27
  4. Step 4: Simplify right side
    672.10x = 440,185.33
  5. Step 5: Solve for x
    x = 440,185.33/672.10
  6. Step 6: Final answer
    x = 654.94

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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.