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Finding the Fourth Proportional to 351.89, 525.39 and 330.02

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Solution

The fourth proportional to 351.89, 525.39 and 330.02 is: 492.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.89 : 525.39 = 330.02 : x
  2. Step 2: Convert to fraction form
    351.89/525.39 = 330.02/x
  3. Step 3: Cross multiply
    351.89x = 525.39 × 330.02
  4. Step 4: Simplify right side
    351.89x = 173,386.58
  5. Step 5: Solve for x
    x = 173,386.58/351.89
  6. Step 6: Final answer
    x = 492.74

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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.