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Finding the Fourth Proportional to 710.26, 1,063.16 and 449.35

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Solution

The fourth proportional to 710.26, 1,063.16 and 449.35 is: 672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.26 : 1,063.16 = 449.35 : x
  2. Step 2: Convert to fraction form
    710.26/1,063.16 = 449.35/x
  3. Step 3: Cross multiply
    710.26x = 1,063.16 × 449.35
  4. Step 4: Simplify right side
    710.26x = 477,730.03
  5. Step 5: Solve for x
    x = 477,730.03/710.26
  6. Step 6: Final answer
    x = 672.62

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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.