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Finding the Fourth Proportional to 221.16, 331.69 and 58.83

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Solution

The fourth proportional to 221.16, 331.69 and 58.83 is: 88.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.16 : 331.69 = 58.83 : x
  2. Step 2: Convert to fraction form
    221.16/331.69 = 58.83/x
  3. Step 3: Cross multiply
    221.16x = 331.69 × 58.83
  4. Step 4: Simplify right side
    221.16x = 19,513.32
  5. Step 5: Solve for x
    x = 19,513.32/221.16
  6. Step 6: Final answer
    x = 88.23

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