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Finding the Fourth Proportional to 64.14, 95.67 and 63.21

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Solution

The fourth proportional to 64.14, 95.67 and 63.21 is: 94.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.14 : 95.67 = 63.21 : x
  2. Step 2: Convert to fraction form
    64.14/95.67 = 63.21/x
  3. Step 3: Cross multiply
    64.14x = 95.67 × 63.21
  4. Step 4: Simplify right side
    64.14x = 6,047.30
  5. Step 5: Solve for x
    x = 6,047.30/64.14
  6. Step 6: Final answer
    x = 94.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.