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Finding the Fourth Proportional to 531.20, 730.32 and 453.44

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Solution

The fourth proportional to 531.20, 730.32 and 453.44 is: 623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.20 : 730.32 = 453.44 : x
  2. Step 2: Convert to fraction form
    531.20/730.32 = 453.44/x
  3. Step 3: Cross multiply
    531.20x = 730.32 × 453.44
  4. Step 4: Simplify right side
    531.20x = 331,156.30
  5. Step 5: Solve for x
    x = 331,156.30/531.20
  6. Step 6: Final answer
    x = 623.41

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.