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Finding the Fourth Proportional to 5.10, 7.61 and 4.53

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Solution

The fourth proportional to 5.10, 7.61 and 4.53 is: 6.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.10 : 7.61 = 4.53 : x
  2. Step 2: Convert to fraction form
    5.10/7.61 = 4.53/x
  3. Step 3: Cross multiply
    5.10x = 7.61 × 4.53
  4. Step 4: Simplify right side
    5.10x = 34.44
  5. Step 5: Solve for x
    x = 34.44/5.10
  6. Step 6: Final answer
    x = 6.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.