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Finding the Fourth Proportional to 88.07, 121.40 and 60.43

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Solution

The fourth proportional to 88.07, 121.40 and 60.43 is: 83.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.07 : 121.40 = 60.43 : x
  2. Step 2: Convert to fraction form
    88.07/121.40 = 60.43/x
  3. Step 3: Cross multiply
    88.07x = 121.40 × 60.43
  4. Step 4: Simplify right side
    88.07x = 7,336.20
  5. Step 5: Solve for x
    x = 7,336.20/88.07
  6. Step 6: Final answer
    x = 83.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.