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Finding the Fourth Proportional to 348.81, 479.96 and 340.61

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Solution

The fourth proportional to 348.81, 479.96 and 340.61 is: 468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.81 : 479.96 = 340.61 : x
  2. Step 2: Convert to fraction form
    348.81/479.96 = 340.61/x
  3. Step 3: Cross multiply
    348.81x = 479.96 × 340.61
  4. Step 4: Simplify right side
    348.81x = 163,479.18
  5. Step 5: Solve for x
    x = 163,479.18/348.81
  6. Step 6: Final answer
    x = 468.68

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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.