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Finding the Fourth Proportional to 70.37, 97 and 53.97

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Solution

The fourth proportional to 70.37, 97 and 53.97 is: 74.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.37 : 97 = 53.97 : x
  2. Step 2: Convert to fraction form
    70.37/97 = 53.97/x
  3. Step 3: Cross multiply
    70.37x = 97 × 53.97
  4. Step 4: Simplify right side
    70.37x = 5,235.09
  5. Step 5: Solve for x
    x = 5,235.09/70.37
  6. Step 6: Final answer
    x = 74.39

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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.