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Finding the Fourth Proportional to 88.02, 131.49 and 65.07

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Solution

The fourth proportional to 88.02, 131.49 and 65.07 is: 97.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.02 : 131.49 = 65.07 : x
  2. Step 2: Convert to fraction form
    88.02/131.49 = 65.07/x
  3. Step 3: Cross multiply
    88.02x = 131.49 × 65.07
  4. Step 4: Simplify right side
    88.02x = 8,556.05
  5. Step 5: Solve for x
    x = 8,556.05/88.02
  6. Step 6: Final answer
    x = 97.21

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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.