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Finding the Fourth Proportional to 730.52, 1,095.90 and 345.56

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Solution

The fourth proportional to 730.52, 1,095.90 and 345.56 is: 518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.52 : 1,095.90 = 345.56 : x
  2. Step 2: Convert to fraction form
    730.52/1,095.90 = 345.56/x
  3. Step 3: Cross multiply
    730.52x = 1,095.90 × 345.56
  4. Step 4: Simplify right side
    730.52x = 378,699.20
  5. Step 5: Solve for x
    x = 378,699.20/730.52
  6. Step 6: Final answer
    x = 518.40

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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.