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Finding the Fourth Proportional to 529.21, 730.36 and 293.21

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Solution

The fourth proportional to 529.21, 730.36 and 293.21 is: 404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.21 : 730.36 = 293.21 : x
  2. Step 2: Convert to fraction form
    529.21/730.36 = 293.21/x
  3. Step 3: Cross multiply
    529.21x = 730.36 × 293.21
  4. Step 4: Simplify right side
    529.21x = 214,147.39
  5. Step 5: Solve for x
    x = 214,147.39/529.21
  6. Step 6: Final answer
    x = 404.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.