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Finding the Fourth Proportional to 897.31, 1,344.26 and 434.44

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Solution

The fourth proportional to 897.31, 1,344.26 and 434.44 is: 650.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.31 : 1,344.26 = 434.44 : x
  2. Step 2: Convert to fraction form
    897.31/1,344.26 = 434.44/x
  3. Step 3: Cross multiply
    897.31x = 1,344.26 × 434.44
  4. Step 4: Simplify right side
    897.31x = 584,003.08
  5. Step 5: Solve for x
    x = 584,003.08/897.31
  6. Step 6: Final answer
    x = 650.84

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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.