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Finding the Fourth Proportional to 65.77, 98.18 and 63.63

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Solution

The fourth proportional to 65.77, 98.18 and 63.63 is: 94.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.77 : 98.18 = 63.63 : x
  2. Step 2: Convert to fraction form
    65.77/98.18 = 63.63/x
  3. Step 3: Cross multiply
    65.77x = 98.18 × 63.63
  4. Step 4: Simplify right side
    65.77x = 6,247.11
  5. Step 5: Solve for x
    x = 6,247.11/65.77
  6. Step 6: Final answer
    x = 94.99

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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.