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Finding the Fourth Proportional to 617.08, 925.94 and 455.50

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Solution

The fourth proportional to 617.08, 925.94 and 455.50 is: 683.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.08 : 925.94 = 455.50 : x
  2. Step 2: Convert to fraction form
    617.08/925.94 = 455.50/x
  3. Step 3: Cross multiply
    617.08x = 925.94 × 455.50
  4. Step 4: Simplify right side
    617.08x = 421,765.67
  5. Step 5: Solve for x
    x = 421,765.67/617.08
  6. Step 6: Final answer
    x = 683.49

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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.