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Finding the Fourth Proportional to 569.97, 853.88 and 440.19

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Solution

The fourth proportional to 569.97, 853.88 and 440.19 is: 659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.97 : 853.88 = 440.19 : x
  2. Step 2: Convert to fraction form
    569.97/853.88 = 440.19/x
  3. Step 3: Cross multiply
    569.97x = 853.88 × 440.19
  4. Step 4: Simplify right side
    569.97x = 375,867.24
  5. Step 5: Solve for x
    x = 375,867.24/569.97
  6. Step 6: Final answer
    x = 659.45

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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.