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Finding the Fourth Proportional to 455.92, 684.52 and 349.04

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Solution

The fourth proportional to 455.92, 684.52 and 349.04 is: 524.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.92 : 684.52 = 349.04 : x
  2. Step 2: Convert to fraction form
    455.92/684.52 = 349.04/x
  3. Step 3: Cross multiply
    455.92x = 684.52 × 349.04
  4. Step 4: Simplify right side
    455.92x = 238,924.86
  5. Step 5: Solve for x
    x = 238,924.86/455.92
  6. Step 6: Final answer
    x = 524.05

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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.