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Finding the Fourth Proportional to 58.38, 80.49 and 36.51

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Solution

The fourth proportional to 58.38, 80.49 and 36.51 is: 50.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.38 : 80.49 = 36.51 : x
  2. Step 2: Convert to fraction form
    58.38/80.49 = 36.51/x
  3. Step 3: Cross multiply
    58.38x = 80.49 × 36.51
  4. Step 4: Simplify right side
    58.38x = 2,938.69
  5. Step 5: Solve for x
    x = 2,938.69/58.38
  6. Step 6: Final answer
    x = 50.34

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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.