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Finding the Fourth Proportional to 403.17, 556.06 and 270.35

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Solution

The fourth proportional to 403.17, 556.06 and 270.35 is: 372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.17 : 556.06 = 270.35 : x
  2. Step 2: Convert to fraction form
    403.17/556.06 = 270.35/x
  3. Step 3: Cross multiply
    403.17x = 556.06 × 270.35
  4. Step 4: Simplify right side
    403.17x = 150,327.36
  5. Step 5: Solve for x
    x = 150,327.36/403.17
  6. Step 6: Final answer
    x = 372.86

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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.