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Finding the Fourth Proportional to 63.21, 94.41 and 56.49

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Solution

The fourth proportional to 63.21, 94.41 and 56.49 is: 84.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.21 : 94.41 = 56.49 : x
  2. Step 2: Convert to fraction form
    63.21/94.41 = 56.49/x
  3. Step 3: Cross multiply
    63.21x = 94.41 × 56.49
  4. Step 4: Simplify right side
    63.21x = 5,333.22
  5. Step 5: Solve for x
    x = 5,333.22/63.21
  6. Step 6: Final answer
    x = 84.37

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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.