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Finding the Fourth Proportional to 66.43, 100.08 and 50.50

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Solution

The fourth proportional to 66.43, 100.08 and 50.50 is: 76.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.43 : 100.08 = 50.50 : x
  2. Step 2: Convert to fraction form
    66.43/100.08 = 50.50/x
  3. Step 3: Cross multiply
    66.43x = 100.08 × 50.50
  4. Step 4: Simplify right side
    66.43x = 5,054.04
  5. Step 5: Solve for x
    x = 5,054.04/66.43
  6. Step 6: Final answer
    x = 76.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.