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Finding the Fourth Proportional to 39.24, 58.35 and 36.69

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Solution

The fourth proportional to 39.24, 58.35 and 36.69 is: 54.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.24 : 58.35 = 36.69 : x
  2. Step 2: Convert to fraction form
    39.24/58.35 = 36.69/x
  3. Step 3: Cross multiply
    39.24x = 58.35 × 36.69
  4. Step 4: Simplify right side
    39.24x = 2,140.86
  5. Step 5: Solve for x
    x = 2,140.86/39.24
  6. Step 6: Final answer
    x = 54.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.