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Finding the Fourth Proportional to 910, 1,365 and 294.22

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Solution

The fourth proportional to 910, 1,365 and 294.22 is: 441.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    910 : 1,365 = 294.22 : x
  2. Step 2: Convert to fraction form
    910/1,365 = 294.22/x
  3. Step 3: Cross multiply
    910x = 1,365 × 294.22
  4. Step 4: Simplify right side
    910x = 401,610.30
  5. Step 5: Solve for x
    x = 401,610.30/910
  6. Step 6: Final answer
    x = 441.33

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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.