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Finding the Fourth Proportional to 1,203.82, 1,657.69 and 1,176.55

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Solution

The fourth proportional to 1,203.82, 1,657.69 and 1,176.55 is: 1,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.82 : 1,657.69 = 1,176.55 : x
  2. Step 2: Convert to fraction form
    1,203.82/1,657.69 = 1,176.55/x
  3. Step 3: Cross multiply
    1,203.82x = 1,657.69 × 1,176.55
  4. Step 4: Simplify right side
    1,203.82x = 1,950,355.17
  5. Step 5: Solve for x
    x = 1,950,355.17/1,203.82
  6. Step 6: Final answer
    x = 1,620.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.