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Finding the Fourth Proportional to 349.04, 482.28 and 286.76

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Solution

The fourth proportional to 349.04, 482.28 and 286.76 is: 396.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.04 : 482.28 = 286.76 : x
  2. Step 2: Convert to fraction form
    349.04/482.28 = 286.76/x
  3. Step 3: Cross multiply
    349.04x = 482.28 × 286.76
  4. Step 4: Simplify right side
    349.04x = 138,298.61
  5. Step 5: Solve for x
    x = 138,298.61/349.04
  6. Step 6: Final answer
    x = 396.23

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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.