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Finding the Fourth Proportional to 549.33, 821.91 and 471.22

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Solution

The fourth proportional to 549.33, 821.91 and 471.22 is: 705.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.33 : 821.91 = 471.22 : x
  2. Step 2: Convert to fraction form
    549.33/821.91 = 471.22/x
  3. Step 3: Cross multiply
    549.33x = 821.91 × 471.22
  4. Step 4: Simplify right side
    549.33x = 387,300.43
  5. Step 5: Solve for x
    x = 387,300.43/549.33
  6. Step 6: Final answer
    x = 705.04

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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.