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Finding the Fourth Proportional to 39, 58.50 and 34.77

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Solution

The fourth proportional to 39, 58.50 and 34.77 is: 52.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39 : 58.50 = 34.77 : x
  2. Step 2: Convert to fraction form
    39/58.50 = 34.77/x
  3. Step 3: Cross multiply
    39x = 58.50 × 34.77
  4. Step 4: Simplify right side
    39x = 2,034.05
  5. Step 5: Solve for x
    x = 2,034.05/39
  6. Step 6: Final answer
    x = 52.16

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.