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Finding the Fourth Proportional to 39, 58.23 and 33.30

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Solution

The fourth proportional to 39, 58.23 and 33.30 is: 49.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39 : 58.23 = 33.30 : x
  2. Step 2: Convert to fraction form
    39/58.23 = 33.30/x
  3. Step 3: Cross multiply
    39x = 58.23 × 33.30
  4. Step 4: Simplify right side
    39x = 1,938.72
  5. Step 5: Solve for x
    x = 1,938.72/39
  6. Step 6: Final answer
    x = 49.71

Related Problems

Find fourth proportional to 19.50, 29.11 and 16.65
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.