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Finding the Fourth Proportional to 358.75, 495.48 and 242.11

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Solution

The fourth proportional to 358.75, 495.48 and 242.11 is: 334.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.75 : 495.48 = 242.11 : x
  2. Step 2: Convert to fraction form
    358.75/495.48 = 242.11/x
  3. Step 3: Cross multiply
    358.75x = 495.48 × 242.11
  4. Step 4: Simplify right side
    358.75x = 119,960.66
  5. Step 5: Solve for x
    x = 119,960.66/358.75
  6. Step 6: Final answer
    x = 334.39

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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.