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Finding the Fourth Proportional to 39.34, 59.08 and 36.18

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Solution

The fourth proportional to 39.34, 59.08 and 36.18 is: 54.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.34 : 59.08 = 36.18 : x
  2. Step 2: Convert to fraction form
    39.34/59.08 = 36.18/x
  3. Step 3: Cross multiply
    39.34x = 59.08 × 36.18
  4. Step 4: Simplify right side
    39.34x = 2,137.46
  5. Step 5: Solve for x
    x = 2,137.46/39.34
  6. Step 6: Final answer
    x = 54.33

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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.