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Finding the Fourth Proportional to 722.19, 997.02 and 672.98

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Solution

The fourth proportional to 722.19, 997.02 and 672.98 is: 929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.19 : 997.02 = 672.98 : x
  2. Step 2: Convert to fraction form
    722.19/997.02 = 672.98/x
  3. Step 3: Cross multiply
    722.19x = 997.02 × 672.98
  4. Step 4: Simplify right side
    722.19x = 670,974.52
  5. Step 5: Solve for x
    x = 670,974.52/722.19
  6. Step 6: Final answer
    x = 929.08

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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.