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Finding the Fourth Proportional to 528.75, 796.55 and 483.64

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Solution

The fourth proportional to 528.75, 796.55 and 483.64 is: 728.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.75 : 796.55 = 483.64 : x
  2. Step 2: Convert to fraction form
    528.75/796.55 = 483.64/x
  3. Step 3: Cross multiply
    528.75x = 796.55 × 483.64
  4. Step 4: Simplify right side
    528.75x = 385,243.44
  5. Step 5: Solve for x
    x = 385,243.44/528.75
  6. Step 6: Final answer
    x = 728.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.