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Finding the Fourth Proportional to 64.76, 97.70 and 63.27

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Solution

The fourth proportional to 64.76, 97.70 and 63.27 is: 95.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.76 : 97.70 = 63.27 : x
  2. Step 2: Convert to fraction form
    64.76/97.70 = 63.27/x
  3. Step 3: Cross multiply
    64.76x = 97.70 × 63.27
  4. Step 4: Simplify right side
    64.76x = 6,181.16
  5. Step 5: Solve for x
    x = 6,181.16/64.76
  6. Step 6: Final answer
    x = 95.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.