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Finding the Fourth Proportional to 54.92, 76 and 46.72

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Solution

The fourth proportional to 54.92, 76 and 46.72 is: 64.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.92 : 76 = 46.72 : x
  2. Step 2: Convert to fraction form
    54.92/76 = 46.72/x
  3. Step 3: Cross multiply
    54.92x = 76 × 46.72
  4. Step 4: Simplify right side
    54.92x = 3,550.72
  5. Step 5: Solve for x
    x = 3,550.72/54.92
  6. Step 6: Final answer
    x = 64.65

Related Problems

Find fourth proportional to 27.46, 38 and 23.36
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Find fourth proportional to 55.92, 77.38 and 47.72
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.