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Finding the Fourth Proportional to 65.19, 90.05 and 60.33

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Solution

The fourth proportional to 65.19, 90.05 and 60.33 is: 83.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.19 : 90.05 = 60.33 : x
  2. Step 2: Convert to fraction form
    65.19/90.05 = 60.33/x
  3. Step 3: Cross multiply
    65.19x = 90.05 × 60.33
  4. Step 4: Simplify right side
    65.19x = 5,432.72
  5. Step 5: Solve for x
    x = 5,432.72/65.19
  6. Step 6: Final answer
    x = 83.34

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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.