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Finding the Fourth Proportional to 349.17, 482.45 and 283.56

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Solution

The fourth proportional to 349.17, 482.45 and 283.56 is: 391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.17 : 482.45 = 283.56 : x
  2. Step 2: Convert to fraction form
    349.17/482.45 = 283.56/x
  3. Step 3: Cross multiply
    349.17x = 482.45 × 283.56
  4. Step 4: Simplify right side
    349.17x = 136,802.10
  5. Step 5: Solve for x
    x = 136,802.10/349.17
  6. Step 6: Final answer
    x = 391.79

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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.