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Finding the Fourth Proportional to 73.23, 100.85 and 63.33

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Solution

The fourth proportional to 73.23, 100.85 and 63.33 is: 87.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.23 : 100.85 = 63.33 : x
  2. Step 2: Convert to fraction form
    73.23/100.85 = 63.33/x
  3. Step 3: Cross multiply
    73.23x = 100.85 × 63.33
  4. Step 4: Simplify right side
    73.23x = 6,386.51
  5. Step 5: Solve for x
    x = 6,386.51/73.23
  6. Step 6: Final answer
    x = 87.21

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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.