Home / 1,086.90-1,631.85-567.28

Finding the Fourth Proportional to 1,086.90, 1,631.85 and 567.28

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Solution

The fourth proportional to 1,086.90, 1,631.85 and 567.28 is: 851.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.90 : 1,631.85 = 567.28 : x
  2. Step 2: Convert to fraction form
    1,086.90/1,631.85 = 567.28/x
  3. Step 3: Cross multiply
    1,086.90x = 1,631.85 × 567.28
  4. Step 4: Simplify right side
    1,086.90x = 925,715.87
  5. Step 5: Solve for x
    x = 925,715.87/1,086.90
  6. Step 6: Final answer
    x = 851.70

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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.