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Finding the Fourth Proportional to 662.15, 992.19 and 251.06

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Solution

The fourth proportional to 662.15, 992.19 and 251.06 is: 376.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.15 : 992.19 = 251.06 : x
  2. Step 2: Convert to fraction form
    662.15/992.19 = 251.06/x
  3. Step 3: Cross multiply
    662.15x = 992.19 × 251.06
  4. Step 4: Simplify right side
    662.15x = 249,099.22
  5. Step 5: Solve for x
    x = 249,099.22/662.15
  6. Step 6: Final answer
    x = 376.20

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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.