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Finding the Fourth Proportional to 453.37, 680.95 and 388.34

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Solution

The fourth proportional to 453.37, 680.95 and 388.34 is: 583.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.37 : 680.95 = 388.34 : x
  2. Step 2: Convert to fraction form
    453.37/680.95 = 388.34/x
  3. Step 3: Cross multiply
    453.37x = 680.95 × 388.34
  4. Step 4: Simplify right side
    453.37x = 264,439.15
  5. Step 5: Solve for x
    x = 264,439.15/453.37
  6. Step 6: Final answer
    x = 583.28

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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.