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Finding the Fourth Proportional to 3.72, 5.59 and 3.53

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Solution

The fourth proportional to 3.72, 5.59 and 3.53 is: 5.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.72 : 5.59 = 3.53 : x
  2. Step 2: Convert to fraction form
    3.72/5.59 = 3.53/x
  3. Step 3: Cross multiply
    3.72x = 5.59 × 3.53
  4. Step 4: Simplify right side
    3.72x = 19.74
  5. Step 5: Solve for x
    x = 19.74/3.72
  6. Step 6: Final answer
    x = 5.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.