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Finding the Fourth Proportional to 773.02, 1,158.99 and 388.06

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Solution

The fourth proportional to 773.02, 1,158.99 and 388.06 is: 581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.02 : 1,158.99 = 388.06 : x
  2. Step 2: Convert to fraction form
    773.02/1,158.99 = 388.06/x
  3. Step 3: Cross multiply
    773.02x = 1,158.99 × 388.06
  4. Step 4: Simplify right side
    773.02x = 449,757.66
  5. Step 5: Solve for x
    x = 449,757.66/773.02
  6. Step 6: Final answer
    x = 581.82

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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.