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Finding the Fourth Proportional to 730.97, 1,008.80 and 436.28

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Solution

The fourth proportional to 730.97, 1,008.80 and 436.28 is: 602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.97 : 1,008.80 = 436.28 : x
  2. Step 2: Convert to fraction form
    730.97/1,008.80 = 436.28/x
  3. Step 3: Cross multiply
    730.97x = 1,008.80 × 436.28
  4. Step 4: Simplify right side
    730.97x = 440,119.60
  5. Step 5: Solve for x
    x = 440,119.60/730.97
  6. Step 6: Final answer
    x = 602.10

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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.