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Finding the Fourth Proportional to 135.26, 202.48 and 89.51

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Solution

The fourth proportional to 135.26, 202.48 and 89.51 is: 133.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.26 : 202.48 = 89.51 : x
  2. Step 2: Convert to fraction form
    135.26/202.48 = 89.51/x
  3. Step 3: Cross multiply
    135.26x = 202.48 × 89.51
  4. Step 4: Simplify right side
    135.26x = 18,123.98
  5. Step 5: Solve for x
    x = 18,123.98/135.26
  6. Step 6: Final answer
    x = 133.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.