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Finding the Fourth Proportional to 375.08, 517.10 and 275.45

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Solution

The fourth proportional to 375.08, 517.10 and 275.45 is: 379.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.08 : 517.10 = 275.45 : x
  2. Step 2: Convert to fraction form
    375.08/517.10 = 275.45/x
  3. Step 3: Cross multiply
    375.08x = 517.10 × 275.45
  4. Step 4: Simplify right side
    375.08x = 142,431.23
  5. Step 5: Solve for x
    x = 142,431.23/375.08
  6. Step 6: Final answer
    x = 379.74

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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.