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Finding the Fourth Proportional to 531.86, 734.12 and 322.20

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Solution

The fourth proportional to 531.86, 734.12 and 322.20 is: 444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.86 : 734.12 = 322.20 : x
  2. Step 2: Convert to fraction form
    531.86/734.12 = 322.20/x
  3. Step 3: Cross multiply
    531.86x = 734.12 × 322.20
  4. Step 4: Simplify right side
    531.86x = 236,533.46
  5. Step 5: Solve for x
    x = 236,533.46/531.86
  6. Step 6: Final answer
    x = 444.73

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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.