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Finding the Fourth Proportional to 181.94, 272.88 and 66.35

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Solution

The fourth proportional to 181.94, 272.88 and 66.35 is: 99.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.94 : 272.88 = 66.35 : x
  2. Step 2: Convert to fraction form
    181.94/272.88 = 66.35/x
  3. Step 3: Cross multiply
    181.94x = 272.88 × 66.35
  4. Step 4: Simplify right side
    181.94x = 18,106.27
  5. Step 5: Solve for x
    x = 18,106.27/181.94
  6. Step 6: Final answer
    x = 99.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.