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Finding the Fourth Proportional to 649.41, 973.20 and 283.43

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Solution

The fourth proportional to 649.41, 973.20 and 283.43 is: 424.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.41 : 973.20 = 283.43 : x
  2. Step 2: Convert to fraction form
    649.41/973.20 = 283.43/x
  3. Step 3: Cross multiply
    649.41x = 973.20 × 283.43
  4. Step 4: Simplify right side
    649.41x = 275,832.66
  5. Step 5: Solve for x
    x = 275,832.66/649.41
  6. Step 6: Final answer
    x = 424.75

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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.