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Finding the Fourth Proportional to 60.21, 89.81 and 53.37

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Solution

The fourth proportional to 60.21, 89.81 and 53.37 is: 79.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.21 : 89.81 = 53.37 : x
  2. Step 2: Convert to fraction form
    60.21/89.81 = 53.37/x
  3. Step 3: Cross multiply
    60.21x = 89.81 × 53.37
  4. Step 4: Simplify right side
    60.21x = 4,793.09
  5. Step 5: Solve for x
    x = 4,793.09/60.21
  6. Step 6: Final answer
    x = 79.61

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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.