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Finding the Fourth Proportional to 803.24, 1,202.58 and 528.50

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Solution

The fourth proportional to 803.24, 1,202.58 and 528.50 is: 791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.24 : 1,202.58 = 528.50 : x
  2. Step 2: Convert to fraction form
    803.24/1,202.58 = 528.50/x
  3. Step 3: Cross multiply
    803.24x = 1,202.58 × 528.50
  4. Step 4: Simplify right side
    803.24x = 635,566.54
  5. Step 5: Solve for x
    x = 635,566.54/803.24
  6. Step 6: Final answer
    x = 791.25

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Double scale
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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.