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Finding the Fourth Proportional to 58.43, 80.64 and 36.31

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Solution

The fourth proportional to 58.43, 80.64 and 36.31 is: 50.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.43 : 80.64 = 36.31 : x
  2. Step 2: Convert to fraction form
    58.43/80.64 = 36.31/x
  3. Step 3: Cross multiply
    58.43x = 80.64 × 36.31
  4. Step 4: Simplify right side
    58.43x = 2,927.84
  5. Step 5: Solve for x
    x = 2,927.84/58.43
  6. Step 6: Final answer
    x = 50.11

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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.