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Finding the Fourth Proportional to 53.64, 73.54 and 52.92

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Solution

The fourth proportional to 53.64, 73.54 and 52.92 is: 72.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.64 : 73.54 = 52.92 : x
  2. Step 2: Convert to fraction form
    53.64/73.54 = 52.92/x
  3. Step 3: Cross multiply
    53.64x = 73.54 × 52.92
  4. Step 4: Simplify right side
    53.64x = 3,891.74
  5. Step 5: Solve for x
    x = 3,891.74/53.64
  6. Step 6: Final answer
    x = 72.55

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.