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Finding the Fourth Proportional to 295.02, 407.43 and 221.22

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Solution

The fourth proportional to 295.02, 407.43 and 221.22 is: 305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.02 : 407.43 = 221.22 : x
  2. Step 2: Convert to fraction form
    295.02/407.43 = 221.22/x
  3. Step 3: Cross multiply
    295.02x = 407.43 × 221.22
  4. Step 4: Simplify right side
    295.02x = 90,131.66
  5. Step 5: Solve for x
    x = 90,131.66/295.02
  6. Step 6: Final answer
    x = 305.51

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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.