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Finding the Fourth Proportional to 58.14, 80.20 and 34.81

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Solution

The fourth proportional to 58.14, 80.20 and 34.81 is: 48.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.14 : 80.20 = 34.81 : x
  2. Step 2: Convert to fraction form
    58.14/80.20 = 34.81/x
  3. Step 3: Cross multiply
    58.14x = 80.20 × 34.81
  4. Step 4: Simplify right side
    58.14x = 2,791.76
  5. Step 5: Solve for x
    x = 2,791.76/58.14
  6. Step 6: Final answer
    x = 48.02

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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.