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Finding the Fourth Proportional to 668.77, 997.78 and 599.65

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Solution

The fourth proportional to 668.77, 997.78 and 599.65 is: 894.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.77 : 997.78 = 599.65 : x
  2. Step 2: Convert to fraction form
    668.77/997.78 = 599.65/x
  3. Step 3: Cross multiply
    668.77x = 997.78 × 599.65
  4. Step 4: Simplify right side
    668.77x = 598,318.78
  5. Step 5: Solve for x
    x = 598,318.78/668.77
  6. Step 6: Final answer
    x = 894.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.