Home / 1,190.35-1,785.15-357.58

Finding the Fourth Proportional to 1,190.35, 1,785.15 and 357.58

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Solution

The fourth proportional to 1,190.35, 1,785.15 and 357.58 is: 536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.35 : 1,785.15 = 357.58 : x
  2. Step 2: Convert to fraction form
    1,190.35/1,785.15 = 357.58/x
  3. Step 3: Cross multiply
    1,190.35x = 1,785.15 × 357.58
  4. Step 4: Simplify right side
    1,190.35x = 638,333.94
  5. Step 5: Solve for x
    x = 638,333.94/1,190.35
  6. Step 6: Final answer
    x = 536.26

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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.