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Finding the Fourth Proportional to 351.08, 528.58 and 243.60

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Solution

The fourth proportional to 351.08, 528.58 and 243.60 is: 366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.08 : 528.58 = 243.60 : x
  2. Step 2: Convert to fraction form
    351.08/528.58 = 243.60/x
  3. Step 3: Cross multiply
    351.08x = 528.58 × 243.60
  4. Step 4: Simplify right side
    351.08x = 128,762.09
  5. Step 5: Solve for x
    x = 128,762.09/351.08
  6. Step 6: Final answer
    x = 366.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.