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Finding the Fourth Proportional to 547.10, 821.32 and 362.16

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Solution

The fourth proportional to 547.10, 821.32 and 362.16 is: 543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.10 : 821.32 = 362.16 : x
  2. Step 2: Convert to fraction form
    547.10/821.32 = 362.16/x
  3. Step 3: Cross multiply
    547.10x = 821.32 × 362.16
  4. Step 4: Simplify right side
    547.10x = 297,449.25
  5. Step 5: Solve for x
    x = 297,449.25/547.10
  6. Step 6: Final answer
    x = 543.68

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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.