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Finding the Fourth Proportional to 505.68, 696.24 and 450.60

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Solution

The fourth proportional to 505.68, 696.24 and 450.60 is: 620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.68 : 696.24 = 450.60 : x
  2. Step 2: Convert to fraction form
    505.68/696.24 = 450.60/x
  3. Step 3: Cross multiply
    505.68x = 696.24 × 450.60
  4. Step 4: Simplify right side
    505.68x = 313,725.74
  5. Step 5: Solve for x
    x = 313,725.74/505.68
  6. Step 6: Final answer
    x = 620.40

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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.