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Finding the Fourth Proportional to 528.42, 728.10 and 362.46

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Solution

The fourth proportional to 528.42, 728.10 and 362.46 is: 499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.42 : 728.10 = 362.46 : x
  2. Step 2: Convert to fraction form
    528.42/728.10 = 362.46/x
  3. Step 3: Cross multiply
    528.42x = 728.10 × 362.46
  4. Step 4: Simplify right side
    528.42x = 263,907.13
  5. Step 5: Solve for x
    x = 263,907.13/528.42
  6. Step 6: Final answer
    x = 499.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.