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Finding the Fourth Proportional to 405.05, 607.58 and 222.06

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Solution

The fourth proportional to 405.05, 607.58 and 222.06 is: 333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.05 : 607.58 = 222.06 : x
  2. Step 2: Convert to fraction form
    405.05/607.58 = 222.06/x
  3. Step 3: Cross multiply
    405.05x = 607.58 × 222.06
  4. Step 4: Simplify right side
    405.05x = 134,919.05
  5. Step 5: Solve for x
    x = 134,919.05/405.05
  6. Step 6: Final answer
    x = 333.09

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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.