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Finding the Fourth Proportional to 0.60, 0.90 and 0.38

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Solution

The fourth proportional to 0.60, 0.90 and 0.38 is: 0.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.60 : 0.90 = 0.38 : x
  2. Step 2: Convert to fraction form
    0.60/0.90 = 0.38/x
  3. Step 3: Cross multiply
    0.60x = 0.90 × 0.38
  4. Step 4: Simplify right side
    0.60x = 0.34
  5. Step 5: Solve for x
    x = 0.34/0.60
  6. Step 6: Final answer
    x = 0.56

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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.