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Finding the Fourth Proportional to 57.04, 84.98 and 55.46

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Solution

The fourth proportional to 57.04, 84.98 and 55.46 is: 82.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.04 : 84.98 = 55.46 : x
  2. Step 2: Convert to fraction form
    57.04/84.98 = 55.46/x
  3. Step 3: Cross multiply
    57.04x = 84.98 × 55.46
  4. Step 4: Simplify right side
    57.04x = 4,713.34
  5. Step 5: Solve for x
    x = 4,713.34/57.04
  6. Step 6: Final answer
    x = 82.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.