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Finding the Fourth Proportional to 4.66, 6.46 and 3.86

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Solution

The fourth proportional to 4.66, 6.46 and 3.86 is: 5.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.66 : 6.46 = 3.86 : x
  2. Step 2: Convert to fraction form
    4.66/6.46 = 3.86/x
  3. Step 3: Cross multiply
    4.66x = 6.46 × 3.86
  4. Step 4: Simplify right side
    4.66x = 24.94
  5. Step 5: Solve for x
    x = 24.94/4.66
  6. Step 6: Final answer
    x = 5.35

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.