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Finding the Fourth Proportional to 4.34, 6.51 and 2.57

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Solution

The fourth proportional to 4.34, 6.51 and 2.57 is: 3.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.34 : 6.51 = 2.57 : x
  2. Step 2: Convert to fraction form
    4.34/6.51 = 2.57/x
  3. Step 3: Cross multiply
    4.34x = 6.51 × 2.57
  4. Step 4: Simplify right side
    4.34x = 16.73
  5. Step 5: Solve for x
    x = 16.73/4.34
  6. Step 6: Final answer
    x = 3.86

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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.