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Finding the Fourth Proportional to 574.83, 793.51 and 388.57

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Solution

The fourth proportional to 574.83, 793.51 and 388.57 is: 536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.83 : 793.51 = 388.57 : x
  2. Step 2: Convert to fraction form
    574.83/793.51 = 388.57/x
  3. Step 3: Cross multiply
    574.83x = 793.51 × 388.57
  4. Step 4: Simplify right side
    574.83x = 308,334.18
  5. Step 5: Solve for x
    x = 308,334.18/574.83
  6. Step 6: Final answer
    x = 536.39

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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.