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Finding the Fourth Proportional to 649.50, 973.89 and 283.92

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Solution

The fourth proportional to 649.50, 973.89 and 283.92 is: 425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.50 : 973.89 = 283.92 : x
  2. Step 2: Convert to fraction form
    649.50/973.89 = 283.92/x
  3. Step 3: Cross multiply
    649.50x = 973.89 × 283.92
  4. Step 4: Simplify right side
    649.50x = 276,506.85
  5. Step 5: Solve for x
    x = 276,506.85/649.50
  6. Step 6: Final answer
    x = 425.72

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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.