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Finding the Fourth Proportional to 528.60, 727.74 and 450.52

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Solution

The fourth proportional to 528.60, 727.74 and 450.52 is: 620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.60 : 727.74 = 450.52 : x
  2. Step 2: Convert to fraction form
    528.60/727.74 = 450.52/x
  3. Step 3: Cross multiply
    528.60x = 727.74 × 450.52
  4. Step 4: Simplify right side
    528.60x = 327,861.42
  5. Step 5: Solve for x
    x = 327,861.42/528.60
  6. Step 6: Final answer
    x = 620.24

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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.