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Finding the Fourth Proportional to 46.94, 70.66 and 36.86

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Solution

The fourth proportional to 46.94, 70.66 and 36.86 is: 55.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.94 : 70.66 = 36.86 : x
  2. Step 2: Convert to fraction form
    46.94/70.66 = 36.86/x
  3. Step 3: Cross multiply
    46.94x = 70.66 × 36.86
  4. Step 4: Simplify right side
    46.94x = 2,604.53
  5. Step 5: Solve for x
    x = 2,604.53/46.94
  6. Step 6: Final answer
    x = 55.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.