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Finding the Fourth Proportional to 1,039.74, 1,560.11 and 606.93

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Solution

The fourth proportional to 1,039.74, 1,560.11 and 606.93 is: 910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.74 : 1,560.11 = 606.93 : x
  2. Step 2: Convert to fraction form
    1,039.74/1,560.11 = 606.93/x
  3. Step 3: Cross multiply
    1,039.74x = 1,560.11 × 606.93
  4. Step 4: Simplify right side
    1,039.74x = 946,874.53
  5. Step 5: Solve for x
    x = 946,874.53/1,039.74
  6. Step 6: Final answer
    x = 910.68

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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.