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Finding the Fourth Proportional to 575.51, 792.50 and 388.94

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Solution

The fourth proportional to 575.51, 792.50 and 388.94 is: 535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.51 : 792.50 = 388.94 : x
  2. Step 2: Convert to fraction form
    575.51/792.50 = 388.94/x
  3. Step 3: Cross multiply
    575.51x = 792.50 × 388.94
  4. Step 4: Simplify right side
    575.51x = 308,229.04
  5. Step 5: Solve for x
    x = 308,229.04/575.51
  6. Step 6: Final answer
    x = 535.58

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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.