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Finding the Fourth Proportional to 583.03, 804.72 and 396.55

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Solution

The fourth proportional to 583.03, 804.72 and 396.55 is: 547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.03 : 804.72 = 396.55 : x
  2. Step 2: Convert to fraction form
    583.03/804.72 = 396.55/x
  3. Step 3: Cross multiply
    583.03x = 804.72 × 396.55
  4. Step 4: Simplify right side
    583.03x = 319,111.72
  5. Step 5: Solve for x
    x = 319,111.72/583.03
  6. Step 6: Final answer
    x = 547.33

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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.