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Finding the Fourth Proportional to 953.49, 1,429.01 and 768.48

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Solution

The fourth proportional to 953.49, 1,429.01 and 768.48 is: 1,151.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.49 : 1,429.01 = 768.48 : x
  2. Step 2: Convert to fraction form
    953.49/1,429.01 = 768.48/x
  3. Step 3: Cross multiply
    953.49x = 1,429.01 × 768.48
  4. Step 4: Simplify right side
    953.49x = 1,098,167.32
  5. Step 5: Solve for x
    x = 1,098,167.32/953.49
  6. Step 6: Final answer
    x = 1,151.73

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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.