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Finding the Fourth Proportional to 556.88, 768.58 and 360.60

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Solution

The fourth proportional to 556.88, 768.58 and 360.60 is: 497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.88 : 768.58 = 360.60 : x
  2. Step 2: Convert to fraction form
    556.88/768.58 = 360.60/x
  3. Step 3: Cross multiply
    556.88x = 768.58 × 360.60
  4. Step 4: Simplify right side
    556.88x = 277,149.95
  5. Step 5: Solve for x
    x = 277,149.95/556.88
  6. Step 6: Final answer
    x = 497.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.