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Finding the Fourth Proportional to 352.96, 486.84 and 242.70

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Solution

The fourth proportional to 352.96, 486.84 and 242.70 is: 334.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.96 : 486.84 = 242.70 : x
  2. Step 2: Convert to fraction form
    352.96/486.84 = 242.70/x
  3. Step 3: Cross multiply
    352.96x = 486.84 × 242.70
  4. Step 4: Simplify right side
    352.96x = 118,153.10
  5. Step 5: Solve for x
    x = 118,153.10/352.96
  6. Step 6: Final answer
    x = 334.75

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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.