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Finding the Fourth Proportional to 88.08, 131.77 and 57.09

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Solution

The fourth proportional to 88.08, 131.77 and 57.09 is: 85.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.08 : 131.77 = 57.09 : x
  2. Step 2: Convert to fraction form
    88.08/131.77 = 57.09/x
  3. Step 3: Cross multiply
    88.08x = 131.77 × 57.09
  4. Step 4: Simplify right side
    88.08x = 7,522.75
  5. Step 5: Solve for x
    x = 7,522.75/88.08
  6. Step 6: Final answer
    x = 85.41

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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.