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Finding the Fourth Proportional to 257.88, 384.35 and 250.39

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Solution

The fourth proportional to 257.88, 384.35 and 250.39 is: 373.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.88 : 384.35 = 250.39 : x
  2. Step 2: Convert to fraction form
    257.88/384.35 = 250.39/x
  3. Step 3: Cross multiply
    257.88x = 384.35 × 250.39
  4. Step 4: Simplify right side
    257.88x = 96,236.62
  5. Step 5: Solve for x
    x = 96,236.62/257.88
  6. Step 6: Final answer
    x = 373.18

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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.