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Finding the Fourth Proportional to 612.99, 846.09 and 351.02

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Solution

The fourth proportional to 612.99, 846.09 and 351.02 is: 484.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.99 : 846.09 = 351.02 : x
  2. Step 2: Convert to fraction form
    612.99/846.09 = 351.02/x
  3. Step 3: Cross multiply
    612.99x = 846.09 × 351.02
  4. Step 4: Simplify right side
    612.99x = 296,990.28
  5. Step 5: Solve for x
    x = 296,990.28/612.99
  6. Step 6: Final answer
    x = 484.49

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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.