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Finding the Fourth Proportional to 531.08, 733.08 and 321.26

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Solution

The fourth proportional to 531.08, 733.08 and 321.26 is: 443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.08 : 733.08 = 321.26 : x
  2. Step 2: Convert to fraction form
    531.08/733.08 = 321.26/x
  3. Step 3: Cross multiply
    531.08x = 733.08 × 321.26
  4. Step 4: Simplify right side
    531.08x = 235,509.28
  5. Step 5: Solve for x
    x = 235,509.28/531.08
  6. Step 6: Final answer
    x = 443.45

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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.