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Finding the Fourth Proportional to 73.29, 109.94 and 21.93

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Solution

The fourth proportional to 73.29, 109.94 and 21.93 is: 32.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.29 : 109.94 = 21.93 : x
  2. Step 2: Convert to fraction form
    73.29/109.94 = 21.93/x
  3. Step 3: Cross multiply
    73.29x = 109.94 × 21.93
  4. Step 4: Simplify right side
    73.29x = 2,410.46
  5. Step 5: Solve for x
    x = 2,410.46/73.29
  6. Step 6: Final answer
    x = 32.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.