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Finding the Fourth Proportional to 53.93, 74.39 and 38.37

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Solution

The fourth proportional to 53.93, 74.39 and 38.37 is: 52.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.93 : 74.39 = 38.37 : x
  2. Step 2: Convert to fraction form
    53.93/74.39 = 38.37/x
  3. Step 3: Cross multiply
    53.93x = 74.39 × 38.37
  4. Step 4: Simplify right side
    53.93x = 2,854.43
  5. Step 5: Solve for x
    x = 2,854.43/53.93
  6. Step 6: Final answer
    x = 52.93

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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.