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Finding the Fourth Proportional to 64.27, 88.70 and 36.64

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Solution

The fourth proportional to 64.27, 88.70 and 36.64 is: 50.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.27 : 88.70 = 36.64 : x
  2. Step 2: Convert to fraction form
    64.27/88.70 = 36.64/x
  3. Step 3: Cross multiply
    64.27x = 88.70 × 36.64
  4. Step 4: Simplify right side
    64.27x = 3,249.77
  5. Step 5: Solve for x
    x = 3,249.77/64.27
  6. Step 6: Final answer
    x = 50.57

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