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Finding the Fourth Proportional to 713.96, 1,070.66 and 251.64

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Solution

The fourth proportional to 713.96, 1,070.66 and 251.64 is: 377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.96 : 1,070.66 = 251.64 : x
  2. Step 2: Convert to fraction form
    713.96/1,070.66 = 251.64/x
  3. Step 3: Cross multiply
    713.96x = 1,070.66 × 251.64
  4. Step 4: Simplify right side
    713.96x = 269,420.88
  5. Step 5: Solve for x
    x = 269,420.88/713.96
  6. Step 6: Final answer
    x = 377.36

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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.