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Finding the Fourth Proportional to 65.33, 90.06 and 50.60

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Solution

The fourth proportional to 65.33, 90.06 and 50.60 is: 69.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.33 : 90.06 = 50.60 : x
  2. Step 2: Convert to fraction form
    65.33/90.06 = 50.60/x
  3. Step 3: Cross multiply
    65.33x = 90.06 × 50.60
  4. Step 4: Simplify right side
    65.33x = 4,557.04
  5. Step 5: Solve for x
    x = 4,557.04/65.33
  6. Step 6: Final answer
    x = 69.75

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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.