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Finding the Fourth Proportional to 50.81, 70 and 33.53

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Solution

The fourth proportional to 50.81, 70 and 33.53 is: 46.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.81 : 70 = 33.53 : x
  2. Step 2: Convert to fraction form
    50.81/70 = 33.53/x
  3. Step 3: Cross multiply
    50.81x = 70 × 33.53
  4. Step 4: Simplify right side
    50.81x = 2,347.10
  5. Step 5: Solve for x
    x = 2,347.10/50.81
  6. Step 6: Final answer
    x = 46.19

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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.