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Finding the Fourth Proportional to 1,184.82, 1,777.26 and 319.14

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Solution

The fourth proportional to 1,184.82, 1,777.26 and 319.14 is: 478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.82 : 1,777.26 = 319.14 : x
  2. Step 2: Convert to fraction form
    1,184.82/1,777.26 = 319.14/x
  3. Step 3: Cross multiply
    1,184.82x = 1,777.26 × 319.14
  4. Step 4: Simplify right side
    1,184.82x = 567,194.76
  5. Step 5: Solve for x
    x = 567,194.76/1,184.82
  6. Step 6: Final answer
    x = 478.72

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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.