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Finding the Fourth Proportional to 275.48, 379.98 and 177.36

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Solution

The fourth proportional to 275.48, 379.98 and 177.36 is: 244.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.48 : 379.98 = 177.36 : x
  2. Step 2: Convert to fraction form
    275.48/379.98 = 177.36/x
  3. Step 3: Cross multiply
    275.48x = 379.98 × 177.36
  4. Step 4: Simplify right side
    275.48x = 67,393.25
  5. Step 5: Solve for x
    x = 67,393.25/275.48
  6. Step 6: Final answer
    x = 244.64

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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.