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Finding the Fourth Proportional to 88.48, 132.81 and 70.66

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Solution

The fourth proportional to 88.48, 132.81 and 70.66 is: 106.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.48 : 132.81 = 70.66 : x
  2. Step 2: Convert to fraction form
    88.48/132.81 = 70.66/x
  3. Step 3: Cross multiply
    88.48x = 132.81 × 70.66
  4. Step 4: Simplify right side
    88.48x = 9,384.35
  5. Step 5: Solve for x
    x = 9,384.35/88.48
  6. Step 6: Final answer
    x = 106.06

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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.