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Finding the Fourth Proportional to 555.56, 836.66 and 484.28

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Solution

The fourth proportional to 555.56, 836.66 and 484.28 is: 729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.56 : 836.66 = 484.28 : x
  2. Step 2: Convert to fraction form
    555.56/836.66 = 484.28/x
  3. Step 3: Cross multiply
    555.56x = 836.66 × 484.28
  4. Step 4: Simplify right side
    555.56x = 405,177.70
  5. Step 5: Solve for x
    x = 405,177.70/555.56
  6. Step 6: Final answer
    x = 729.31

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.