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Finding the Fourth Proportional to 344.58, 513.80 and 330.18

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Solution

The fourth proportional to 344.58, 513.80 and 330.18 is: 492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.58 : 513.80 = 330.18 : x
  2. Step 2: Convert to fraction form
    344.58/513.80 = 330.18/x
  3. Step 3: Cross multiply
    344.58x = 513.80 × 330.18
  4. Step 4: Simplify right side
    344.58x = 169,644.83
  5. Step 5: Solve for x
    x = 169,644.83/344.58
  6. Step 6: Final answer
    x = 492.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.