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Finding the Fourth Proportional to 248.43, 372.50 and 145.67

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Solution

The fourth proportional to 248.43, 372.50 and 145.67 is: 218.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.43 : 372.50 = 145.67 : x
  2. Step 2: Convert to fraction form
    248.43/372.50 = 145.67/x
  3. Step 3: Cross multiply
    248.43x = 372.50 × 145.67
  4. Step 4: Simplify right side
    248.43x = 54,259.48
  5. Step 5: Solve for x
    x = 54,259.48/248.43
  6. Step 6: Final answer
    x = 218.41

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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.