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Finding the Fourth Proportional to 303.54, 454.89 and 242.40

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Solution

The fourth proportional to 303.54, 454.89 and 242.40 is: 363.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.54 : 454.89 = 242.40 : x
  2. Step 2: Convert to fraction form
    303.54/454.89 = 242.40/x
  3. Step 3: Cross multiply
    303.54x = 454.89 × 242.40
  4. Step 4: Simplify right side
    303.54x = 110,265.34
  5. Step 5: Solve for x
    x = 110,265.34/303.54
  6. Step 6: Final answer
    x = 363.26

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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.