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Finding the Fourth Proportional to 97.04, 145.29 and 92.60

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Solution

The fourth proportional to 97.04, 145.29 and 92.60 is: 138.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.04 : 145.29 = 92.60 : x
  2. Step 2: Convert to fraction form
    97.04/145.29 = 92.60/x
  3. Step 3: Cross multiply
    97.04x = 145.29 × 92.60
  4. Step 4: Simplify right side
    97.04x = 13,453.85
  5. Step 5: Solve for x
    x = 13,453.85/97.04
  6. Step 6: Final answer
    x = 138.64

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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.