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Finding the Fourth Proportional to 48.49, 66.93 and 34.49

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Solution

The fourth proportional to 48.49, 66.93 and 34.49 is: 47.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.49 : 66.93 = 34.49 : x
  2. Step 2: Convert to fraction form
    48.49/66.93 = 34.49/x
  3. Step 3: Cross multiply
    48.49x = 66.93 × 34.49
  4. Step 4: Simplify right side
    48.49x = 2,308.71
  5. Step 5: Solve for x
    x = 2,308.71/48.49
  6. Step 6: Final answer
    x = 47.61

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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.