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Finding the Fourth Proportional to 5.62, 7.73 and 4.87

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Solution

The fourth proportional to 5.62, 7.73 and 4.87 is: 6.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.62 : 7.73 = 4.87 : x
  2. Step 2: Convert to fraction form
    5.62/7.73 = 4.87/x
  3. Step 3: Cross multiply
    5.62x = 7.73 × 4.87
  4. Step 4: Simplify right side
    5.62x = 37.66
  5. Step 5: Solve for x
    x = 37.66/5.62
  6. Step 6: Final answer
    x = 6.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.