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Finding the Fourth Proportional to 528.58, 793.14 and 345.94

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Solution

The fourth proportional to 528.58, 793.14 and 345.94 is: 519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.58 : 793.14 = 345.94 : x
  2. Step 2: Convert to fraction form
    528.58/793.14 = 345.94/x
  3. Step 3: Cross multiply
    528.58x = 793.14 × 345.94
  4. Step 4: Simplify right side
    528.58x = 274,378.85
  5. Step 5: Solve for x
    x = 274,378.85/528.58
  6. Step 6: Final answer
    x = 519.09

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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.