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Finding the Fourth Proportional to 73.21, 101.06 and 57.63

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Solution

The fourth proportional to 73.21, 101.06 and 57.63 is: 79.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.21 : 101.06 = 57.63 : x
  2. Step 2: Convert to fraction form
    73.21/101.06 = 57.63/x
  3. Step 3: Cross multiply
    73.21x = 101.06 × 57.63
  4. Step 4: Simplify right side
    73.21x = 5,824.09
  5. Step 5: Solve for x
    x = 5,824.09/73.21
  6. Step 6: Final answer
    x = 79.55

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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.