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Finding the Fourth Proportional to 528.21, 793.32 and 323.18

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Solution

The fourth proportional to 528.21, 793.32 and 323.18 is: 485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.21 : 793.32 = 323.18 : x
  2. Step 2: Convert to fraction form
    528.21/793.32 = 323.18/x
  3. Step 3: Cross multiply
    528.21x = 793.32 × 323.18
  4. Step 4: Simplify right side
    528.21x = 256,381.19
  5. Step 5: Solve for x
    x = 256,381.19/528.21
  6. Step 6: Final answer
    x = 485.38

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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.