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Finding the Fourth Proportional to 53.42, 73.69 and 37.88

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Solution

The fourth proportional to 53.42, 73.69 and 37.88 is: 52.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.42 : 73.69 = 37.88 : x
  2. Step 2: Convert to fraction form
    53.42/73.69 = 37.88/x
  3. Step 3: Cross multiply
    53.42x = 73.69 × 37.88
  4. Step 4: Simplify right side
    53.42x = 2,791.38
  5. Step 5: Solve for x
    x = 2,791.38/53.42
  6. Step 6: Final answer
    x = 52.25

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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.