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Finding the Fourth Proportional to 344.39, 474.93 and 309.04

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Solution

The fourth proportional to 344.39, 474.93 and 309.04 is: 426.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.39 : 474.93 = 309.04 : x
  2. Step 2: Convert to fraction form
    344.39/474.93 = 309.04/x
  3. Step 3: Cross multiply
    344.39x = 474.93 × 309.04
  4. Step 4: Simplify right side
    344.39x = 146,771.18
  5. Step 5: Solve for x
    x = 146,771.18/344.39
  6. Step 6: Final answer
    x = 426.18

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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.