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Finding the Fourth Proportional to 38, 56.67 and 34.97

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Solution

The fourth proportional to 38, 56.67 and 34.97 is: 52.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38 : 56.67 = 34.97 : x
  2. Step 2: Convert to fraction form
    38/56.67 = 34.97/x
  3. Step 3: Cross multiply
    38x = 56.67 × 34.97
  4. Step 4: Simplify right side
    38x = 1,981.84
  5. Step 5: Solve for x
    x = 1,981.84/38
  6. Step 6: Final answer
    x = 52.15

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Find fourth proportional to 19, 28.34 and 17.49
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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.