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Finding the Fourth Proportional to 1,179.58, 1,768.69 and 357.61

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Solution

The fourth proportional to 1,179.58, 1,768.69 and 357.61 is: 536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.58 : 1,768.69 = 357.61 : x
  2. Step 2: Convert to fraction form
    1,179.58/1,768.69 = 357.61/x
  3. Step 3: Cross multiply
    1,179.58x = 1,768.69 × 357.61
  4. Step 4: Simplify right side
    1,179.58x = 632,501.23
  5. Step 5: Solve for x
    x = 632,501.23/1,179.58
  6. Step 6: Final answer
    x = 536.21

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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.