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Finding the Fourth Proportional to 54.97, 76 and 51.52

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Solution

The fourth proportional to 54.97, 76 and 51.52 is: 71.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.97 : 76 = 51.52 : x
  2. Step 2: Convert to fraction form
    54.97/76 = 51.52/x
  3. Step 3: Cross multiply
    54.97x = 76 × 51.52
  4. Step 4: Simplify right side
    54.97x = 3,915.52
  5. Step 5: Solve for x
    x = 3,915.52/54.97
  6. Step 6: Final answer
    x = 71.23

Related Problems

Find fourth proportional to 27.49, 38 and 25.76
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Similar ratio
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1.5x scale

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.