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Finding the Fourth Proportional to 672.02, 927.28 and 475.19

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Solution

The fourth proportional to 672.02, 927.28 and 475.19 is: 655.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.02 : 927.28 = 475.19 : x
  2. Step 2: Convert to fraction form
    672.02/927.28 = 475.19/x
  3. Step 3: Cross multiply
    672.02x = 927.28 × 475.19
  4. Step 4: Simplify right side
    672.02x = 440,634.18
  5. Step 5: Solve for x
    x = 440,634.18/672.02
  6. Step 6: Final answer
    x = 655.69

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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.