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Finding the Fourth Proportional to 358.25, 491.16 and 351.77

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Solution

The fourth proportional to 358.25, 491.16 and 351.77 is: 482.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.25 : 491.16 = 351.77 : x
  2. Step 2: Convert to fraction form
    358.25/491.16 = 351.77/x
  3. Step 3: Cross multiply
    358.25x = 491.16 × 351.77
  4. Step 4: Simplify right side
    358.25x = 172,774.78
  5. Step 5: Solve for x
    x = 172,774.78/358.25
  6. Step 6: Final answer
    x = 482.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.