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Finding the Fourth Proportional to 456.66, 683.91 and 302.21

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Solution

The fourth proportional to 456.66, 683.91 and 302.21 is: 452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.66 : 683.91 = 302.21 : x
  2. Step 2: Convert to fraction form
    456.66/683.91 = 302.21/x
  3. Step 3: Cross multiply
    456.66x = 683.91 × 302.21
  4. Step 4: Simplify right side
    456.66x = 206,684.44
  5. Step 5: Solve for x
    x = 206,684.44/456.66
  6. Step 6: Final answer
    x = 452.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.