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Finding the Fourth Proportional to 38.63, 52.72 and 38.10

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Solution

The fourth proportional to 38.63, 52.72 and 38.10 is: 52.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.63 : 52.72 = 38.10 : x
  2. Step 2: Convert to fraction form
    38.63/52.72 = 38.10/x
  3. Step 3: Cross multiply
    38.63x = 52.72 × 38.10
  4. Step 4: Simplify right side
    38.63x = 2,008.73
  5. Step 5: Solve for x
    x = 2,008.73/38.63
  6. Step 6: Final answer
    x = 52.00

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.