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Finding the Fourth Proportional to 71.94, 107.99 and 46.29

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Solution

The fourth proportional to 71.94, 107.99 and 46.29 is: 69.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.94 : 107.99 = 46.29 : x
  2. Step 2: Convert to fraction form
    71.94/107.99 = 46.29/x
  3. Step 3: Cross multiply
    71.94x = 107.99 × 46.29
  4. Step 4: Simplify right side
    71.94x = 4,998.86
  5. Step 5: Solve for x
    x = 4,998.86/71.94
  6. Step 6: Final answer
    x = 69.49

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Why These Related Problems?

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