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Finding the Fourth Proportional to 70.36, 97.01 and 48.20

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Solution

The fourth proportional to 70.36, 97.01 and 48.20 is: 66.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.36 : 97.01 = 48.20 : x
  2. Step 2: Convert to fraction form
    70.36/97.01 = 48.20/x
  3. Step 3: Cross multiply
    70.36x = 97.01 × 48.20
  4. Step 4: Simplify right side
    70.36x = 4,675.88
  5. Step 5: Solve for x
    x = 4,675.88/70.36
  6. Step 6: Final answer
    x = 66.46

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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.