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Finding the Fourth Proportional to 256.89, 384.66 and 175.62

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Solution

The fourth proportional to 256.89, 384.66 and 175.62 is: 262.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.89 : 384.66 = 175.62 : x
  2. Step 2: Convert to fraction form
    256.89/384.66 = 175.62/x
  3. Step 3: Cross multiply
    256.89x = 384.66 × 175.62
  4. Step 4: Simplify right side
    256.89x = 67,553.99
  5. Step 5: Solve for x
    x = 67,553.99/256.89
  6. Step 6: Final answer
    x = 262.97

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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.