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Finding the Fourth Proportional to 304.75, 454.64 and 279.08

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Solution

The fourth proportional to 304.75, 454.64 and 279.08 is: 416.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.75 : 454.64 = 279.08 : x
  2. Step 2: Convert to fraction form
    304.75/454.64 = 279.08/x
  3. Step 3: Cross multiply
    304.75x = 454.64 × 279.08
  4. Step 4: Simplify right side
    304.75x = 126,880.93
  5. Step 5: Solve for x
    x = 126,880.93/304.75
  6. Step 6: Final answer
    x = 416.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.