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Finding the Fourth Proportional to 612.39, 845.12 and 332.64

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Solution

The fourth proportional to 612.39, 845.12 and 332.64 is: 459.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.39 : 845.12 = 332.64 : x
  2. Step 2: Convert to fraction form
    612.39/845.12 = 332.64/x
  3. Step 3: Cross multiply
    612.39x = 845.12 × 332.64
  4. Step 4: Simplify right side
    612.39x = 281,120.72
  5. Step 5: Solve for x
    x = 281,120.72/612.39
  6. Step 6: Final answer
    x = 459.06

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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.