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Finding the Fourth Proportional to 73.33, 109.26 and 68.77

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Solution

The fourth proportional to 73.33, 109.26 and 68.77 is: 102.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.33 : 109.26 = 68.77 : x
  2. Step 2: Convert to fraction form
    73.33/109.26 = 68.77/x
  3. Step 3: Cross multiply
    73.33x = 109.26 × 68.77
  4. Step 4: Simplify right side
    73.33x = 7,513.81
  5. Step 5: Solve for x
    x = 7,513.81/73.33
  6. Step 6: Final answer
    x = 102.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.