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Finding the Fourth Proportional to 50.84, 70.13 and 40.46

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Solution

The fourth proportional to 50.84, 70.13 and 40.46 is: 55.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.84 : 70.13 = 40.46 : x
  2. Step 2: Convert to fraction form
    50.84/70.13 = 40.46/x
  3. Step 3: Cross multiply
    50.84x = 70.13 × 40.46
  4. Step 4: Simplify right side
    50.84x = 2,837.43
  5. Step 5: Solve for x
    x = 2,837.43/50.84
  6. Step 6: Final answer
    x = 55.81

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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.