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Finding the Fourth Proportional to 528.05, 791.64 and 322.58

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Solution

The fourth proportional to 528.05, 791.64 and 322.58 is: 483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.05 : 791.64 = 322.58 : x
  2. Step 2: Convert to fraction form
    528.05/791.64 = 322.58/x
  3. Step 3: Cross multiply
    528.05x = 791.64 × 322.58
  4. Step 4: Simplify right side
    528.05x = 255,369.21
  5. Step 5: Solve for x
    x = 255,369.21/528.05
  6. Step 6: Final answer
    x = 483.61

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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.