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Finding the Fourth Proportional to 730.51, 1,096.15 and 418.86

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Solution

The fourth proportional to 730.51, 1,096.15 and 418.86 is: 628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.51 : 1,096.15 = 418.86 : x
  2. Step 2: Convert to fraction form
    730.51/1,096.15 = 418.86/x
  3. Step 3: Cross multiply
    730.51x = 1,096.15 × 418.86
  4. Step 4: Simplify right side
    730.51x = 459,132.34
  5. Step 5: Solve for x
    x = 459,132.34/730.51
  6. Step 6: Final answer
    x = 628.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.