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Finding the Fourth Proportional to 348.56, 479.97 and 296.18

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Solution

The fourth proportional to 348.56, 479.97 and 296.18 is: 407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.56 : 479.97 = 296.18 : x
  2. Step 2: Convert to fraction form
    348.56/479.97 = 296.18/x
  3. Step 3: Cross multiply
    348.56x = 479.97 × 296.18
  4. Step 4: Simplify right side
    348.56x = 142,157.51
  5. Step 5: Solve for x
    x = 142,157.51/348.56
  6. Step 6: Final answer
    x = 407.84

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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.