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Finding the Fourth Proportional to 804.94, 1,113.15 and 790.36

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Solution

The fourth proportional to 804.94, 1,113.15 and 790.36 is: 1,092.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.94 : 1,113.15 = 790.36 : x
  2. Step 2: Convert to fraction form
    804.94/1,113.15 = 790.36/x
  3. Step 3: Cross multiply
    804.94x = 1,113.15 × 790.36
  4. Step 4: Simplify right side
    804.94x = 879,789.23
  5. Step 5: Solve for x
    x = 879,789.23/804.94
  6. Step 6: Final answer
    x = 1,092.99

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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.