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Finding the Fourth Proportional to 3.46, 4.75 and 3.05

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Solution

The fourth proportional to 3.46, 4.75 and 3.05 is: 4.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.46 : 4.75 = 3.05 : x
  2. Step 2: Convert to fraction form
    3.46/4.75 = 3.05/x
  3. Step 3: Cross multiply
    3.46x = 4.75 × 3.05
  4. Step 4: Simplify right side
    3.46x = 14.49
  5. Step 5: Solve for x
    x = 14.49/3.46
  6. Step 6: Final answer
    x = 4.19

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Find fourth proportional to 1.73, 2.37 and 1.53
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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.