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Finding the Fourth Proportional to 672.45, 927.96 and 373.72

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Solution

The fourth proportional to 672.45, 927.96 and 373.72 is: 515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.45 : 927.96 = 373.72 : x
  2. Step 2: Convert to fraction form
    672.45/927.96 = 373.72/x
  3. Step 3: Cross multiply
    672.45x = 927.96 × 373.72
  4. Step 4: Simplify right side
    672.45x = 346,797.21
  5. Step 5: Solve for x
    x = 346,797.21/672.45
  6. Step 6: Final answer
    x = 515.72

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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.