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Finding the Fourth Proportional to 63.11, 94.19 and 53.00

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Solution

The fourth proportional to 63.11, 94.19 and 53.00 is: 79.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.11 : 94.19 = 53.00 : x
  2. Step 2: Convert to fraction form
    63.11/94.19 = 53.00/x
  3. Step 3: Cross multiply
    63.11x = 94.19 × 53.00
  4. Step 4: Simplify right side
    63.11x = 4,991.97
  5. Step 5: Solve for x
    x = 4,991.97/63.11
  6. Step 6: Final answer
    x = 79.10

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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.