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Finding the Fourth Proportional to 248.73, 373.10 and 157.20

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Solution

The fourth proportional to 248.73, 373.10 and 157.20 is: 235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.73 : 373.10 = 157.20 : x
  2. Step 2: Convert to fraction form
    248.73/373.10 = 157.20/x
  3. Step 3: Cross multiply
    248.73x = 373.10 × 157.20
  4. Step 4: Simplify right side
    248.73x = 58,650.53
  5. Step 5: Solve for x
    x = 58,650.53/248.73
  6. Step 6: Final answer
    x = 235.80

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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.