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Finding the Fourth Proportional to 1,173.19, 1,618.77 and 675.82

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Solution

The fourth proportional to 1,173.19, 1,618.77 and 675.82 is: 932.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.19 : 1,618.77 = 675.82 : x
  2. Step 2: Convert to fraction form
    1,173.19/1,618.77 = 675.82/x
  3. Step 3: Cross multiply
    1,173.19x = 1,618.77 × 675.82
  4. Step 4: Simplify right side
    1,173.19x = 1,093,997.14
  5. Step 5: Solve for x
    x = 1,093,997.14/1,173.19
  6. Step 6: Final answer
    x = 932.50

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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.