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Finding the Fourth Proportional to 528.93, 791.98 and 345.87

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Solution

The fourth proportional to 528.93, 791.98 and 345.87 is: 517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.93 : 791.98 = 345.87 : x
  2. Step 2: Convert to fraction form
    528.93/791.98 = 345.87/x
  3. Step 3: Cross multiply
    528.93x = 791.98 × 345.87
  4. Step 4: Simplify right side
    528.93x = 273,921.26
  5. Step 5: Solve for x
    x = 273,921.26/528.93
  6. Step 6: Final answer
    x = 517.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.