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Finding the Fourth Proportional to 64.54, 96.43 and 63.46

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Solution

The fourth proportional to 64.54, 96.43 and 63.46 is: 94.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.54 : 96.43 = 63.46 : x
  2. Step 2: Convert to fraction form
    64.54/96.43 = 63.46/x
  3. Step 3: Cross multiply
    64.54x = 96.43 × 63.46
  4. Step 4: Simplify right side
    64.54x = 6,119.45
  5. Step 5: Solve for x
    x = 6,119.45/64.54
  6. Step 6: Final answer
    x = 94.82

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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.