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Finding the Fourth Proportional to 910.20, 1,365.61 and 293.93

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Solution

The fourth proportional to 910.20, 1,365.61 and 293.93 is: 441.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.20 : 1,365.61 = 293.93 : x
  2. Step 2: Convert to fraction form
    910.20/1,365.61 = 293.93/x
  3. Step 3: Cross multiply
    910.20x = 1,365.61 × 293.93
  4. Step 4: Simplify right side
    910.20x = 401,393.75
  5. Step 5: Solve for x
    x = 401,393.75/910.20
  6. Step 6: Final answer
    x = 441.00

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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.