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Finding the Fourth Proportional to 529.30, 730.46 and 293.28

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Solution

The fourth proportional to 529.30, 730.46 and 293.28 is: 404.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.30 : 730.46 = 293.28 : x
  2. Step 2: Convert to fraction form
    529.30/730.46 = 293.28/x
  3. Step 3: Cross multiply
    529.30x = 730.46 × 293.28
  4. Step 4: Simplify right side
    529.30x = 214,229.31
  5. Step 5: Solve for x
    x = 214,229.31/529.30
  6. Step 6: Final answer
    x = 404.74

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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.