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Finding the Fourth Proportional to 46.85, 64.50 and 41.68

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Solution

The fourth proportional to 46.85, 64.50 and 41.68 is: 57.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.85 : 64.50 = 41.68 : x
  2. Step 2: Convert to fraction form
    46.85/64.50 = 41.68/x
  3. Step 3: Cross multiply
    46.85x = 64.50 × 41.68
  4. Step 4: Simplify right side
    46.85x = 2,688.28
  5. Step 5: Solve for x
    x = 2,688.28/46.85
  6. Step 6: Final answer
    x = 57.39

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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.