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Finding the Fourth Proportional to 804.02, 1,206.11 and 316.95

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Solution

The fourth proportional to 804.02, 1,206.11 and 316.95 is: 475.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.02 : 1,206.11 = 316.95 : x
  2. Step 2: Convert to fraction form
    804.02/1,206.11 = 316.95/x
  3. Step 3: Cross multiply
    804.02x = 1,206.11 × 316.95
  4. Step 4: Simplify right side
    804.02x = 382,274.98
  5. Step 5: Solve for x
    x = 382,274.98/804.02
  6. Step 6: Final answer
    x = 475.46

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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.