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Finding the Fourth Proportional to 528.96, 792.78 and 240

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Solution

The fourth proportional to 528.96, 792.78 and 240 is: 359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.96 : 792.78 = 240 : x
  2. Step 2: Convert to fraction form
    528.96/792.78 = 240/x
  3. Step 3: Cross multiply
    528.96x = 792.78 × 240
  4. Step 4: Simplify right side
    528.96x = 190,267.20
  5. Step 5: Solve for x
    x = 190,267.20/528.96
  6. Step 6: Final answer
    x = 359.70

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