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Finding the Fourth Proportional to 303.18, 417.63 and 220.06

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Solution

The fourth proportional to 303.18, 417.63 and 220.06 is: 303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.18 : 417.63 = 220.06 : x
  2. Step 2: Convert to fraction form
    303.18/417.63 = 220.06/x
  3. Step 3: Cross multiply
    303.18x = 417.63 × 220.06
  4. Step 4: Simplify right side
    303.18x = 91,903.66
  5. Step 5: Solve for x
    x = 91,903.66/303.18
  6. Step 6: Final answer
    x = 303.13

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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.