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Finding the Fourth Proportional to 715.98, 1,074.36 and 283.44

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Solution

The fourth proportional to 715.98, 1,074.36 and 283.44 is: 425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.98 : 1,074.36 = 283.44 : x
  2. Step 2: Convert to fraction form
    715.98/1,074.36 = 283.44/x
  3. Step 3: Cross multiply
    715.98x = 1,074.36 × 283.44
  4. Step 4: Simplify right side
    715.98x = 304,516.60
  5. Step 5: Solve for x
    x = 304,516.60/715.98
  6. Step 6: Final answer
    x = 425.31

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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.