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Finding the Fourth Proportional to 358.17, 494.30 and 270.69

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Solution

The fourth proportional to 358.17, 494.30 and 270.69 is: 373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.17 : 494.30 = 270.69 : x
  2. Step 2: Convert to fraction form
    358.17/494.30 = 270.69/x
  3. Step 3: Cross multiply
    358.17x = 494.30 × 270.69
  4. Step 4: Simplify right side
    358.17x = 133,800.71
  5. Step 5: Solve for x
    x = 133,800.71/358.17
  6. Step 6: Final answer
    x = 373.57

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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.