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Finding the Fourth Proportional to 555.72, 833.40 and 360.60

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Solution

The fourth proportional to 555.72, 833.40 and 360.60 is: 540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.72 : 833.40 = 360.60 : x
  2. Step 2: Convert to fraction form
    555.72/833.40 = 360.60/x
  3. Step 3: Cross multiply
    555.72x = 833.40 × 360.60
  4. Step 4: Simplify right side
    555.72x = 300,524.04
  5. Step 5: Solve for x
    x = 300,524.04/555.72
  6. Step 6: Final answer
    x = 540.78

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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.