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Finding the Fourth Proportional to 38.29, 56.71 and 37.89

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Solution

The fourth proportional to 38.29, 56.71 and 37.89 is: 56.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.29 : 56.71 = 37.89 : x
  2. Step 2: Convert to fraction form
    38.29/56.71 = 37.89/x
  3. Step 3: Cross multiply
    38.29x = 56.71 × 37.89
  4. Step 4: Simplify right side
    38.29x = 2,148.74
  5. Step 5: Solve for x
    x = 2,148.74/38.29
  6. Step 6: Final answer
    x = 56.12

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.