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Finding the Fourth Proportional to 107.11, 160.69 and 30.07

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Solution

The fourth proportional to 107.11, 160.69 and 30.07 is: 45.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.11 : 160.69 = 30.07 : x
  2. Step 2: Convert to fraction form
    107.11/160.69 = 30.07/x
  3. Step 3: Cross multiply
    107.11x = 160.69 × 30.07
  4. Step 4: Simplify right side
    107.11x = 4,832.40
  5. Step 5: Solve for x
    x = 4,832.40/107.11
  6. Step 6: Final answer
    x = 45.12

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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.