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Finding the Fourth Proportional to 46.82, 64.54 and 38.66

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Solution

The fourth proportional to 46.82, 64.54 and 38.66 is: 53.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.82 : 64.54 = 38.66 : x
  2. Step 2: Convert to fraction form
    46.82/64.54 = 38.66/x
  3. Step 3: Cross multiply
    46.82x = 64.54 × 38.66
  4. Step 4: Simplify right side
    46.82x = 2,495.12
  5. Step 5: Solve for x
    x = 2,495.12/46.82
  6. Step 6: Final answer
    x = 53.29

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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.