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Finding the Fourth Proportional to 575.07, 793.28 and 388.82

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Solution

The fourth proportional to 575.07, 793.28 and 388.82 is: 536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.07 : 793.28 = 388.82 : x
  2. Step 2: Convert to fraction form
    575.07/793.28 = 388.82/x
  3. Step 3: Cross multiply
    575.07x = 793.28 × 388.82
  4. Step 4: Simplify right side
    575.07x = 308,444.63
  5. Step 5: Solve for x
    x = 308,444.63/575.07
  6. Step 6: Final answer
    x = 536.36

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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.