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Finding the Fourth Proportional to 445.49, 667.32 and 283.29

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Solution

The fourth proportional to 445.49, 667.32 and 283.29 is: 424.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.49 : 667.32 = 283.29 : x
  2. Step 2: Convert to fraction form
    445.49/667.32 = 283.29/x
  3. Step 3: Cross multiply
    445.49x = 667.32 × 283.29
  4. Step 4: Simplify right side
    445.49x = 189,045.08
  5. Step 5: Solve for x
    x = 189,045.08/445.49
  6. Step 6: Final answer
    x = 424.35

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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.