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Finding the Fourth Proportional to 575.25, 794.13 and 388.67

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Solution

The fourth proportional to 575.25, 794.13 and 388.67 is: 536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.25 : 794.13 = 388.67 : x
  2. Step 2: Convert to fraction form
    575.25/794.13 = 388.67/x
  3. Step 3: Cross multiply
    575.25x = 794.13 × 388.67
  4. Step 4: Simplify right side
    575.25x = 308,656.87
  5. Step 5: Solve for x
    x = 308,656.87/575.25
  6. Step 6: Final answer
    x = 536.56

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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.