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Finding the Fourth Proportional to 529.79, 730.63 and 343.09

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Solution

The fourth proportional to 529.79, 730.63 and 343.09 is: 473.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.79 : 730.63 = 343.09 : x
  2. Step 2: Convert to fraction form
    529.79/730.63 = 343.09/x
  3. Step 3: Cross multiply
    529.79x = 730.63 × 343.09
  4. Step 4: Simplify right side
    529.79x = 250,669.16
  5. Step 5: Solve for x
    x = 250,669.16/529.79
  6. Step 6: Final answer
    x = 473.15

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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.