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Finding the Third Proportional to 0.07 and 0.18

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Solution

The third proportional to 0.07 and 0.18 is: 0.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.07 : 0.18 = 0.18 : x
  2. Step 2: Convert to fraction form
    0.07/0.18 = 0.18/x
  3. Step 3: Cross multiply
    0.07x = 0.18 × 0.18
  4. Step 4: Simplify right side
    0.07x = 0.03
  5. Step 5: Solve for x
    x = 0.03/0.07
  6. Step 6: Final answer
    x = 0.50

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.