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Finding the Fourth Proportional to 41.32, 56.68 and 39

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Solution

The fourth proportional to 41.32, 56.68 and 39 is: 53.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.32 : 56.68 = 39 : x
  2. Step 2: Convert to fraction form
    41.32/56.68 = 39/x
  3. Step 3: Cross multiply
    41.32x = 56.68 × 39
  4. Step 4: Simplify right side
    41.32x = 2,210.52
  5. Step 5: Solve for x
    x = 2,210.52/41.32
  6. Step 6: Final answer
    x = 53.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.