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Finding the Fourth Proportional to 730.97, 1,008.65 and 436.17

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Solution

The fourth proportional to 730.97, 1,008.65 and 436.17 is: 601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.97 : 1,008.65 = 436.17 : x
  2. Step 2: Convert to fraction form
    730.97/1,008.65 = 436.17/x
  3. Step 3: Cross multiply
    730.97x = 1,008.65 × 436.17
  4. Step 4: Simplify right side
    730.97x = 439,940.69
  5. Step 5: Solve for x
    x = 439,940.69/730.97
  6. Step 6: Final answer
    x = 601.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.