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Finding the Fourth Proportional to 528.16, 792.08 and 300

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Solution

The fourth proportional to 528.16, 792.08 and 300 is: 449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.16 : 792.08 = 300 : x
  2. Step 2: Convert to fraction form
    528.16/792.08 = 300/x
  3. Step 3: Cross multiply
    528.16x = 792.08 × 300
  4. Step 4: Simplify right side
    528.16x = 237,624
  5. Step 5: Solve for x
    x = 237,624/528.16
  6. Step 6: Final answer
    x = 449.91

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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.