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Finding the Fourth Proportional to 358.04, 493.94 and 284.06

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Solution

The fourth proportional to 358.04, 493.94 and 284.06 is: 391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.04 : 493.94 = 284.06 : x
  2. Step 2: Convert to fraction form
    358.04/493.94 = 284.06/x
  3. Step 3: Cross multiply
    358.04x = 493.94 × 284.06
  4. Step 4: Simplify right side
    358.04x = 140,306.84
  5. Step 5: Solve for x
    x = 140,306.84/358.04
  6. Step 6: Final answer
    x = 391.88

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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.