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Finding the Fourth Proportional to 88.69, 132.81 and 52.51

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Solution

The fourth proportional to 88.69, 132.81 and 52.51 is: 78.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.69 : 132.81 = 52.51 : x
  2. Step 2: Convert to fraction form
    88.69/132.81 = 52.51/x
  3. Step 3: Cross multiply
    88.69x = 132.81 × 52.51
  4. Step 4: Simplify right side
    88.69x = 6,973.85
  5. Step 5: Solve for x
    x = 6,973.85/88.69
  6. Step 6: Final answer
    x = 78.63

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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.