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Finding the Fourth Proportional to 529.46, 730.30 and 404.90

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Solution

The fourth proportional to 529.46, 730.30 and 404.90 is: 558.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.46 : 730.30 = 404.90 : x
  2. Step 2: Convert to fraction form
    529.46/730.30 = 404.90/x
  3. Step 3: Cross multiply
    529.46x = 730.30 × 404.90
  4. Step 4: Simplify right side
    529.46x = 295,698.47
  5. Step 5: Solve for x
    x = 295,698.47/529.46
  6. Step 6: Final answer
    x = 558.49

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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.