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Finding the Fourth Proportional to 39.34, 58.94 and 33.22

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Solution

The fourth proportional to 39.34, 58.94 and 33.22 is: 49.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.34 : 58.94 = 33.22 : x
  2. Step 2: Convert to fraction form
    39.34/58.94 = 33.22/x
  3. Step 3: Cross multiply
    39.34x = 58.94 × 33.22
  4. Step 4: Simplify right side
    39.34x = 1,957.99
  5. Step 5: Solve for x
    x = 1,957.99/39.34
  6. Step 6: Final answer
    x = 49.77

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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.