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Finding the Fourth Proportional to 248.70, 372.99 and 127.02

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Solution

The fourth proportional to 248.70, 372.99 and 127.02 is: 190.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.70 : 372.99 = 127.02 : x
  2. Step 2: Convert to fraction form
    248.70/372.99 = 127.02/x
  3. Step 3: Cross multiply
    248.70x = 372.99 × 127.02
  4. Step 4: Simplify right side
    248.70x = 47,377.19
  5. Step 5: Solve for x
    x = 47,377.19/248.70
  6. Step 6: Final answer
    x = 190.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.