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Finding the Fourth Proportional to 3.47, 4.74 and 3.44

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Solution

The fourth proportional to 3.47, 4.74 and 3.44 is: 4.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.47 : 4.74 = 3.44 : x
  2. Step 2: Convert to fraction form
    3.47/4.74 = 3.44/x
  3. Step 3: Cross multiply
    3.47x = 4.74 × 3.44
  4. Step 4: Simplify right side
    3.47x = 16.31
  5. Step 5: Solve for x
    x = 16.31/3.47
  6. Step 6: Final answer
    x = 4.70

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Find fourth proportional to 1.74, 2.37 and 1.72
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1.5x scale

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.