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Finding the Fourth Proportional to 1,185.02, 1,777.62 and 319.34

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Solution

The fourth proportional to 1,185.02, 1,777.62 and 319.34 is: 479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185.02 : 1,777.62 = 319.34 : x
  2. Step 2: Convert to fraction form
    1,185.02/1,777.62 = 319.34/x
  3. Step 3: Cross multiply
    1,185.02x = 1,777.62 × 319.34
  4. Step 4: Simplify right side
    1,185.02x = 567,665.17
  5. Step 5: Solve for x
    x = 567,665.17/1,185.02
  6. Step 6: Final answer
    x = 479.03

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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.