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Finding the Fourth Proportional to 575.53, 793.98 and 388.95

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Solution

The fourth proportional to 575.53, 793.98 and 388.95 is: 536.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.53 : 793.98 = 388.95 : x
  2. Step 2: Convert to fraction form
    575.53/793.98 = 388.95/x
  3. Step 3: Cross multiply
    575.53x = 793.98 × 388.95
  4. Step 4: Simplify right side
    575.53x = 308,821.98
  5. Step 5: Solve for x
    x = 308,821.98/575.53
  6. Step 6: Final answer
    x = 536.59

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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.