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Finding the Fourth Proportional to 54.34, 74.93 and 53.53

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Solution

The fourth proportional to 54.34, 74.93 and 53.53 is: 73.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.34 : 74.93 = 53.53 : x
  2. Step 2: Convert to fraction form
    54.34/74.93 = 53.53/x
  3. Step 3: Cross multiply
    54.34x = 74.93 × 53.53
  4. Step 4: Simplify right side
    54.34x = 4,010.55
  5. Step 5: Solve for x
    x = 4,010.55/54.34
  6. Step 6: Final answer
    x = 73.81

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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.