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Finding the Fourth Proportional to 344.90, 479.24 and 340.54

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Solution

The fourth proportional to 344.90, 479.24 and 340.54 is: 473.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.90 : 479.24 = 340.54 : x
  2. Step 2: Convert to fraction form
    344.90/479.24 = 340.54/x
  3. Step 3: Cross multiply
    344.90x = 479.24 × 340.54
  4. Step 4: Simplify right side
    344.90x = 163,200.39
  5. Step 5: Solve for x
    x = 163,200.39/344.90
  6. Step 6: Final answer
    x = 473.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.