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Finding the Fourth Proportional to 71.37, 98.48 and 46.82

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Solution

The fourth proportional to 71.37, 98.48 and 46.82 is: 64.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.37 : 98.48 = 46.82 : x
  2. Step 2: Convert to fraction form
    71.37/98.48 = 46.82/x
  3. Step 3: Cross multiply
    71.37x = 98.48 × 46.82
  4. Step 4: Simplify right side
    71.37x = 4,610.11
  5. Step 5: Solve for x
    x = 4,610.11/71.37
  6. Step 6: Final answer
    x = 64.59

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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.