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Finding the Fourth Proportional to 1,309.70, 1,962.27 and 1,092.98

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Solution

The fourth proportional to 1,309.70, 1,962.27 and 1,092.98 is: 1,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.70 : 1,962.27 = 1,092.98 : x
  2. Step 2: Convert to fraction form
    1,309.70/1,962.27 = 1,092.98/x
  3. Step 3: Cross multiply
    1,309.70x = 1,962.27 × 1,092.98
  4. Step 4: Simplify right side
    1,309.70x = 2,144,721.86
  5. Step 5: Solve for x
    x = 2,144,721.86/1,309.70
  6. Step 6: Final answer
    x = 1,637.57

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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.