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Finding the Fourth Proportional to 375.48, 517.54 and 258.84

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Solution

The fourth proportional to 375.48, 517.54 and 258.84 is: 356.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.48 : 517.54 = 258.84 : x
  2. Step 2: Convert to fraction form
    375.48/517.54 = 258.84/x
  3. Step 3: Cross multiply
    375.48x = 517.54 × 258.84
  4. Step 4: Simplify right side
    375.48x = 133,960.05
  5. Step 5: Solve for x
    x = 133,960.05/375.48
  6. Step 6: Final answer
    x = 356.77

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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.