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Finding the Fourth Proportional to 173.55, 239.38 and 127.08

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Solution

The fourth proportional to 173.55, 239.38 and 127.08 is: 175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.55 : 239.38 = 127.08 : x
  2. Step 2: Convert to fraction form
    173.55/239.38 = 127.08/x
  3. Step 3: Cross multiply
    173.55x = 239.38 × 127.08
  4. Step 4: Simplify right side
    173.55x = 30,420.41
  5. Step 5: Solve for x
    x = 30,420.41/173.55
  6. Step 6: Final answer
    x = 175.28

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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.