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Finding the Fourth Proportional to 662.48, 993.72 and 251.39

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Solution

The fourth proportional to 662.48, 993.72 and 251.39 is: 377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.48 : 993.72 = 251.39 : x
  2. Step 2: Convert to fraction form
    662.48/993.72 = 251.39/x
  3. Step 3: Cross multiply
    662.48x = 993.72 × 251.39
  4. Step 4: Simplify right side
    662.48x = 249,806.30
  5. Step 5: Solve for x
    x = 249,806.30/662.48
  6. Step 6: Final answer
    x = 377.08

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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.