Home / 1,132.10-1,698.15-401.75

Finding the Fourth Proportional to 1,132.10, 1,698.15 and 401.75

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Solution

The fourth proportional to 1,132.10, 1,698.15 and 401.75 is: 602.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.10 : 1,698.15 = 401.75 : x
  2. Step 2: Convert to fraction form
    1,132.10/1,698.15 = 401.75/x
  3. Step 3: Cross multiply
    1,132.10x = 1,698.15 × 401.75
  4. Step 4: Simplify right side
    1,132.10x = 682,231.76
  5. Step 5: Solve for x
    x = 682,231.76/1,132.10
  6. Step 6: Final answer
    x = 602.63

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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.