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Finding the Fourth Proportional to 910.19, 1,365.53 and 293.99

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Solution

The fourth proportional to 910.19, 1,365.53 and 293.99 is: 441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.19 : 1,365.53 = 293.99 : x
  2. Step 2: Convert to fraction form
    910.19/1,365.53 = 293.99/x
  3. Step 3: Cross multiply
    910.19x = 1,365.53 × 293.99
  4. Step 4: Simplify right side
    910.19x = 401,443.87
  5. Step 5: Solve for x
    x = 401,443.87/910.19
  6. Step 6: Final answer
    x = 441.05

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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.