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Finding the Fourth Proportional to 910.36, 1,365.71 and 294.22

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Solution

The fourth proportional to 910.36, 1,365.71 and 294.22 is: 441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.36 : 1,365.71 = 294.22 : x
  2. Step 2: Convert to fraction form
    910.36/1,365.71 = 294.22/x
  3. Step 3: Cross multiply
    910.36x = 1,365.71 × 294.22
  4. Step 4: Simplify right side
    910.36x = 401,819.20
  5. Step 5: Solve for x
    x = 401,819.20/910.36
  6. Step 6: Final answer
    x = 441.38

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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.