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Finding the Fourth Proportional to 575.37, 794.07 and 388.80

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Solution

The fourth proportional to 575.37, 794.07 and 388.80 is: 536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.37 : 794.07 = 388.80 : x
  2. Step 2: Convert to fraction form
    575.37/794.07 = 388.80/x
  3. Step 3: Cross multiply
    575.37x = 794.07 × 388.80
  4. Step 4: Simplify right side
    575.37x = 308,734.42
  5. Step 5: Solve for x
    x = 308,734.42/575.37
  6. Step 6: Final answer
    x = 536.58

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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.