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Finding the Fourth Proportional to 5.70, 8.54 and 3.68

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Solution

The fourth proportional to 5.70, 8.54 and 3.68 is: 5.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.70 : 8.54 = 3.68 : x
  2. Step 2: Convert to fraction form
    5.70/8.54 = 3.68/x
  3. Step 3: Cross multiply
    5.70x = 8.54 × 3.68
  4. Step 4: Simplify right side
    5.70x = 31.43
  5. Step 5: Solve for x
    x = 31.43/5.70
  6. Step 6: Final answer
    x = 5.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.