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Finding the Fourth Proportional to 63.98, 88.44 and 57.14

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Solution

The fourth proportional to 63.98, 88.44 and 57.14 is: 78.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.98 : 88.44 = 57.14 : x
  2. Step 2: Convert to fraction form
    63.98/88.44 = 57.14/x
  3. Step 3: Cross multiply
    63.98x = 88.44 × 57.14
  4. Step 4: Simplify right side
    63.98x = 5,053.46
  5. Step 5: Solve for x
    x = 5,053.46/63.98
  6. Step 6: Final answer
    x = 78.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.