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Finding the Fourth Proportional to 583.79, 804.69 and 397.22

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Solution

The fourth proportional to 583.79, 804.69 and 397.22 is: 547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.79 : 804.69 = 397.22 : x
  2. Step 2: Convert to fraction form
    583.79/804.69 = 397.22/x
  3. Step 3: Cross multiply
    583.79x = 804.69 × 397.22
  4. Step 4: Simplify right side
    583.79x = 319,634.94
  5. Step 5: Solve for x
    x = 319,634.94/583.79
  6. Step 6: Final answer
    x = 547.52

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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.