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Finding the Fourth Proportional to 303.21, 454.16 and 148.81

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Solution

The fourth proportional to 303.21, 454.16 and 148.81 is: 222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.21 : 454.16 = 148.81 : x
  2. Step 2: Convert to fraction form
    303.21/454.16 = 148.81/x
  3. Step 3: Cross multiply
    303.21x = 454.16 × 148.81
  4. Step 4: Simplify right side
    303.21x = 67,583.55
  5. Step 5: Solve for x
    x = 67,583.55/303.21
  6. Step 6: Final answer
    x = 222.89

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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.