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Finding the Fourth Proportional to 612.91, 846.89 and 482.91

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Solution

The fourth proportional to 612.91, 846.89 and 482.91 is: 667.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.91 : 846.89 = 482.91 : x
  2. Step 2: Convert to fraction form
    612.91/846.89 = 482.91/x
  3. Step 3: Cross multiply
    612.91x = 846.89 × 482.91
  4. Step 4: Simplify right side
    612.91x = 408,971.65
  5. Step 5: Solve for x
    x = 408,971.65/612.91
  6. Step 6: Final answer
    x = 667.26

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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.