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Finding the Fourth Proportional to 75.84, 114.36 and 63.96

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Solution

The fourth proportional to 75.84, 114.36 and 63.96 is: 96.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.84 : 114.36 = 63.96 : x
  2. Step 2: Convert to fraction form
    75.84/114.36 = 63.96/x
  3. Step 3: Cross multiply
    75.84x = 114.36 × 63.96
  4. Step 4: Simplify right side
    75.84x = 7,314.47
  5. Step 5: Solve for x
    x = 7,314.47/75.84
  6. Step 6: Final answer
    x = 96.45

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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.