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Finding the Fourth Proportional to 730.30, 1,095.46 and 681.10

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Solution

The fourth proportional to 730.30, 1,095.46 and 681.10 is: 1,021.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.30 : 1,095.46 = 681.10 : x
  2. Step 2: Convert to fraction form
    730.30/1,095.46 = 681.10/x
  3. Step 3: Cross multiply
    730.30x = 1,095.46 × 681.10
  4. Step 4: Simplify right side
    730.30x = 746,117.81
  5. Step 5: Solve for x
    x = 746,117.81/730.30
  6. Step 6: Final answer
    x = 1,021.66

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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.