Home / 1,126.72-1,690.20-357.04

Finding the Fourth Proportional to 1,126.72, 1,690.20 and 357.04

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Solution

The fourth proportional to 1,126.72, 1,690.20 and 357.04 is: 535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.72 : 1,690.20 = 357.04 : x
  2. Step 2: Convert to fraction form
    1,126.72/1,690.20 = 357.04/x
  3. Step 3: Cross multiply
    1,126.72x = 1,690.20 × 357.04
  4. Step 4: Simplify right side
    1,126.72x = 603,469.01
  5. Step 5: Solve for x
    x = 603,469.01/1,126.72
  6. Step 6: Final answer
    x = 535.60

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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.