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Finding the Fourth Proportional to 505.20, 753.48 and 453.36

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Solution

The fourth proportional to 505.20, 753.48 and 453.36 is: 676.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.20 : 753.48 = 453.36 : x
  2. Step 2: Convert to fraction form
    505.20/753.48 = 453.36/x
  3. Step 3: Cross multiply
    505.20x = 753.48 × 453.36
  4. Step 4: Simplify right side
    505.20x = 341,597.69
  5. Step 5: Solve for x
    x = 341,597.69/505.20
  6. Step 6: Final answer
    x = 676.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.