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Finding the Fourth Proportional to 330.08, 455.36 and 247.19

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Solution

The fourth proportional to 330.08, 455.36 and 247.19 is: 341.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.08 : 455.36 = 247.19 : x
  2. Step 2: Convert to fraction form
    330.08/455.36 = 247.19/x
  3. Step 3: Cross multiply
    330.08x = 455.36 × 247.19
  4. Step 4: Simplify right side
    330.08x = 112,556.93
  5. Step 5: Solve for x
    x = 112,556.93/330.08
  6. Step 6: Final answer
    x = 341.00

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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.