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Finding the Fourth Proportional to 940.63, 1,298.19 and 801.38

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Solution

The fourth proportional to 940.63, 1,298.19 and 801.38 is: 1,106.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.63 : 1,298.19 = 801.38 : x
  2. Step 2: Convert to fraction form
    940.63/1,298.19 = 801.38/x
  3. Step 3: Cross multiply
    940.63x = 1,298.19 × 801.38
  4. Step 4: Simplify right side
    940.63x = 1,040,343.50
  5. Step 5: Solve for x
    x = 1,040,343.50/940.63
  6. Step 6: Final answer
    x = 1,106.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.