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Finding the Fourth Proportional to 375.27, 517.48 and 258.63

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Solution

The fourth proportional to 375.27, 517.48 and 258.63 is: 356.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.27 : 517.48 = 258.63 : x
  2. Step 2: Convert to fraction form
    375.27/517.48 = 258.63/x
  3. Step 3: Cross multiply
    375.27x = 517.48 × 258.63
  4. Step 4: Simplify right side
    375.27x = 133,835.85
  5. Step 5: Solve for x
    x = 133,835.85/375.27
  6. Step 6: Final answer
    x = 356.64

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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.