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Finding the Fourth Proportional to 933.88, 1,399.24 and 659.48

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Solution

The fourth proportional to 933.88, 1,399.24 and 659.48 is: 988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.88 : 1,399.24 = 659.48 : x
  2. Step 2: Convert to fraction form
    933.88/1,399.24 = 659.48/x
  3. Step 3: Cross multiply
    933.88x = 1,399.24 × 659.48
  4. Step 4: Simplify right side
    933.88x = 922,770.80
  5. Step 5: Solve for x
    x = 922,770.80/933.88
  6. Step 6: Final answer
    x = 988.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.