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Finding the Fourth Proportional to 372.15, 556.77 and 273.99

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Solution

The fourth proportional to 372.15, 556.77 and 273.99 is: 409.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.15 : 556.77 = 273.99 : x
  2. Step 2: Convert to fraction form
    372.15/556.77 = 273.99/x
  3. Step 3: Cross multiply
    372.15x = 556.77 × 273.99
  4. Step 4: Simplify right side
    372.15x = 152,549.41
  5. Step 5: Solve for x
    x = 152,549.41/372.15
  6. Step 6: Final answer
    x = 409.91

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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.