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Finding the Fourth Proportional to 804.90, 1,205.73 and 588.63

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Solution

The fourth proportional to 804.90, 1,205.73 and 588.63 is: 881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.90 : 1,205.73 = 588.63 : x
  2. Step 2: Convert to fraction form
    804.90/1,205.73 = 588.63/x
  3. Step 3: Cross multiply
    804.90x = 1,205.73 × 588.63
  4. Step 4: Simplify right side
    804.90x = 709,728.85
  5. Step 5: Solve for x
    x = 709,728.85/804.90
  6. Step 6: Final answer
    x = 881.76

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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.