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Finding the Fourth Proportional to 187.30, 281.99 and 155.08

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Solution

The fourth proportional to 187.30, 281.99 and 155.08 is: 233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.30 : 281.99 = 155.08 : x
  2. Step 2: Convert to fraction form
    187.30/281.99 = 155.08/x
  3. Step 3: Cross multiply
    187.30x = 281.99 × 155.08
  4. Step 4: Simplify right side
    187.30x = 43,731.01
  5. Step 5: Solve for x
    x = 43,731.01/187.30
  6. Step 6: Final answer
    x = 233.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.