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Finding the Fourth Proportional to 529.22, 730.37 and 305.22

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Solution

The fourth proportional to 529.22, 730.37 and 305.22 is: 421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.22 : 730.37 = 305.22 : x
  2. Step 2: Convert to fraction form
    529.22/730.37 = 305.22/x
  3. Step 3: Cross multiply
    529.22x = 730.37 × 305.22
  4. Step 4: Simplify right side
    529.22x = 222,924.29
  5. Step 5: Solve for x
    x = 222,924.29/529.22
  6. Step 6: Final answer
    x = 421.23

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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.