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Finding the Fourth Proportional to 528.13, 792.35 and 235.70

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Solution

The fourth proportional to 528.13, 792.35 and 235.70 is: 353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.13 : 792.35 = 235.70 : x
  2. Step 2: Convert to fraction form
    528.13/792.35 = 235.70/x
  3. Step 3: Cross multiply
    528.13x = 792.35 × 235.70
  4. Step 4: Simplify right side
    528.13x = 186,756.90
  5. Step 5: Solve for x
    x = 186,756.90/528.13
  6. Step 6: Final answer
    x = 353.62

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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.