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Finding the Fourth Proportional to 26.19, 39.29 and 8.16

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Solution

The fourth proportional to 26.19, 39.29 and 8.16 is: 12.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.19 : 39.29 = 8.16 : x
  2. Step 2: Convert to fraction form
    26.19/39.29 = 8.16/x
  3. Step 3: Cross multiply
    26.19x = 39.29 × 8.16
  4. Step 4: Simplify right side
    26.19x = 320.42
  5. Step 5: Solve for x
    x = 320.42/26.19
  6. Step 6: Final answer
    x = 12.23

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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.