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Finding the Fourth Proportional to 547.19, 818.89 and 448.55

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Solution

The fourth proportional to 547.19, 818.89 and 448.55 is: 671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.19 : 818.89 = 448.55 : x
  2. Step 2: Convert to fraction form
    547.19/818.89 = 448.55/x
  3. Step 3: Cross multiply
    547.19x = 818.89 × 448.55
  4. Step 4: Simplify right side
    547.19x = 367,313.11
  5. Step 5: Solve for x
    x = 367,313.11/547.19
  6. Step 6: Final answer
    x = 671.27

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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.