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Finding the Fourth Proportional to 2.93, 3.99 and 2.92

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Solution

The fourth proportional to 2.93, 3.99 and 2.92 is: 3.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.93 : 3.99 = 2.92 : x
  2. Step 2: Convert to fraction form
    2.93/3.99 = 2.92/x
  3. Step 3: Cross multiply
    2.93x = 3.99 × 2.92
  4. Step 4: Simplify right side
    2.93x = 11.65
  5. Step 5: Solve for x
    x = 11.65/2.93
  6. Step 6: Final answer
    x = 3.98

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.