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Finding the Fourth Proportional to 42.60, 60.60 and 42.60

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Solution

The fourth proportional to 42.60, 60.60 and 42.60 is: 60.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.60 : 60.60 = 42.60 : x
  2. Step 2: Convert to fraction form
    42.60/60.60 = 42.60/x
  3. Step 3: Cross multiply
    42.60x = 60.60 × 42.60
  4. Step 4: Simplify right side
    42.60x = 2,581.56
  5. Step 5: Solve for x
    x = 2,581.56/42.60
  6. Step 6: Final answer
    x = 60.60

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.