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Finding the Fourth Proportional to 591.93, 887.78 and 221.67

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Solution

The fourth proportional to 591.93, 887.78 and 221.67 is: 332.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.93 : 887.78 = 221.67 : x
  2. Step 2: Convert to fraction form
    591.93/887.78 = 221.67/x
  3. Step 3: Cross multiply
    591.93x = 887.78 × 221.67
  4. Step 4: Simplify right side
    591.93x = 196,794.75
  5. Step 5: Solve for x
    x = 196,794.75/591.93
  6. Step 6: Final answer
    x = 332.46

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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.