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Finding the Fourth Proportional to 722.93, 999.95 and 667.85

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Solution

The fourth proportional to 722.93, 999.95 and 667.85 is: 923.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.93 : 999.95 = 667.85 : x
  2. Step 2: Convert to fraction form
    722.93/999.95 = 667.85/x
  3. Step 3: Cross multiply
    722.93x = 999.95 × 667.85
  4. Step 4: Simplify right side
    722.93x = 667,808.27
  5. Step 5: Solve for x
    x = 667,808.27/722.93
  6. Step 6: Final answer
    x = 923.76

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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.