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Finding the Fourth Proportional to 730.51, 1,096.19 and 438.10

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Solution

The fourth proportional to 730.51, 1,096.19 and 438.10 is: 657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.51 : 1,096.19 = 438.10 : x
  2. Step 2: Convert to fraction form
    730.51/1,096.19 = 438.10/x
  3. Step 3: Cross multiply
    730.51x = 1,096.19 × 438.10
  4. Step 4: Simplify right side
    730.51x = 480,240.84
  5. Step 5: Solve for x
    x = 480,240.84/730.51
  6. Step 6: Final answer
    x = 657.40

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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.