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Finding the Fourth Proportional to 181.95, 250.63 and 155.64

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Solution

The fourth proportional to 181.95, 250.63 and 155.64 is: 214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.95 : 250.63 = 155.64 : x
  2. Step 2: Convert to fraction form
    181.95/250.63 = 155.64/x
  3. Step 3: Cross multiply
    181.95x = 250.63 × 155.64
  4. Step 4: Simplify right side
    181.95x = 39,008.05
  5. Step 5: Solve for x
    x = 39,008.05/181.95
  6. Step 6: Final answer
    x = 214.39

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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.