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Finding the Fourth Proportional to 355.89, 531.35 and 334.02

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Solution

The fourth proportional to 355.89, 531.35 and 334.02 is: 498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.89 : 531.35 = 334.02 : x
  2. Step 2: Convert to fraction form
    355.89/531.35 = 334.02/x
  3. Step 3: Cross multiply
    355.89x = 531.35 × 334.02
  4. Step 4: Simplify right side
    355.89x = 177,481.53
  5. Step 5: Solve for x
    x = 177,481.53/355.89
  6. Step 6: Final answer
    x = 498.70

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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.