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Finding the Fourth Proportional to 3.38, 4.65 and 3.07

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Solution

The fourth proportional to 3.38, 4.65 and 3.07 is: 4.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.38 : 4.65 = 3.07 : x
  2. Step 2: Convert to fraction form
    3.38/4.65 = 3.07/x
  3. Step 3: Cross multiply
    3.38x = 4.65 × 3.07
  4. Step 4: Simplify right side
    3.38x = 14.28
  5. Step 5: Solve for x
    x = 14.28/3.38
  6. Step 6: Final answer
    x = 4.23

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Find fourth proportional to 1.69, 2.33 and 1.54
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.