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Finding the Fourth Proportional to 1,568.06, 2,163.91 and 904.91

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Solution

The fourth proportional to 1,568.06, 2,163.91 and 904.91 is: 1,248.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.06 : 2,163.91 = 904.91 : x
  2. Step 2: Convert to fraction form
    1,568.06/2,163.91 = 904.91/x
  3. Step 3: Cross multiply
    1,568.06x = 2,163.91 × 904.91
  4. Step 4: Simplify right side
    1,568.06x = 1,958,132.98
  5. Step 5: Solve for x
    x = 1,958,132.98/1,568.06
  6. Step 6: Final answer
    x = 1,248.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.