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Finding the Fourth Proportional to 50.94, 70.38 and 46.86

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Solution

The fourth proportional to 50.94, 70.38 and 46.86 is: 64.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.94 : 70.38 = 46.86 : x
  2. Step 2: Convert to fraction form
    50.94/70.38 = 46.86/x
  3. Step 3: Cross multiply
    50.94x = 70.38 × 46.86
  4. Step 4: Simplify right side
    50.94x = 3,298.01
  5. Step 5: Solve for x
    x = 3,298.01/50.94
  6. Step 6: Final answer
    x = 64.74

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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.