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Finding the Fourth Proportional to 73.37, 101.21 and 45.72

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Solution

The fourth proportional to 73.37, 101.21 and 45.72 is: 63.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.37 : 101.21 = 45.72 : x
  2. Step 2: Convert to fraction form
    73.37/101.21 = 45.72/x
  3. Step 3: Cross multiply
    73.37x = 101.21 × 45.72
  4. Step 4: Simplify right side
    73.37x = 4,627.09
  5. Step 5: Solve for x
    x = 4,627.09/73.37
  6. Step 6: Final answer
    x = 63.06

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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.