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Finding the Fourth Proportional to 11.58, 17.39 and 5.57

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Solution

The fourth proportional to 11.58, 17.39 and 5.57 is: 8.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.58 : 17.39 = 5.57 : x
  2. Step 2: Convert to fraction form
    11.58/17.39 = 5.57/x
  3. Step 3: Cross multiply
    11.58x = 17.39 × 5.57
  4. Step 4: Simplify right side
    11.58x = 96.86
  5. Step 5: Solve for x
    x = 96.86/11.58
  6. Step 6: Final answer
    x = 8.36

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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.