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Finding the Fourth Proportional to 1,044.17, 1,564.89 and 768.98

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Solution

The fourth proportional to 1,044.17, 1,564.89 and 768.98 is: 1,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.17 : 1,564.89 = 768.98 : x
  2. Step 2: Convert to fraction form
    1,044.17/1,564.89 = 768.98/x
  3. Step 3: Cross multiply
    1,044.17x = 1,564.89 × 768.98
  4. Step 4: Simplify right side
    1,044.17x = 1,203,361.29
  5. Step 5: Solve for x
    x = 1,203,361.29/1,044.17
  6. Step 6: Final answer
    x = 1,152.46

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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.