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Finding the Fourth Proportional to 358.25, 493.56 and 303.30

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Solution

The fourth proportional to 358.25, 493.56 and 303.30 is: 417.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.25 : 493.56 = 303.30 : x
  2. Step 2: Convert to fraction form
    358.25/493.56 = 303.30/x
  3. Step 3: Cross multiply
    358.25x = 493.56 × 303.30
  4. Step 4: Simplify right side
    358.25x = 149,696.75
  5. Step 5: Solve for x
    x = 149,696.75/358.25
  6. Step 6: Final answer
    x = 417.86

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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.