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Finding the Fourth Proportional to 857.50, 1,183.86 and 650.14

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Solution

The fourth proportional to 857.50, 1,183.86 and 650.14 is: 897.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.50 : 1,183.86 = 650.14 : x
  2. Step 2: Convert to fraction form
    857.50/1,183.86 = 650.14/x
  3. Step 3: Cross multiply
    857.50x = 1,183.86 × 650.14
  4. Step 4: Simplify right side
    857.50x = 769,674.74
  5. Step 5: Solve for x
    x = 769,674.74/857.50
  6. Step 6: Final answer
    x = 897.58

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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.