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Finding the Fourth Proportional to 583.04, 804.48 and 489.60

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Solution

The fourth proportional to 583.04, 804.48 and 489.60 is: 675.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.04 : 804.48 = 489.60 : x
  2. Step 2: Convert to fraction form
    583.04/804.48 = 489.60/x
  3. Step 3: Cross multiply
    583.04x = 804.48 × 489.60
  4. Step 4: Simplify right side
    583.04x = 393,873.41
  5. Step 5: Solve for x
    x = 393,873.41/583.04
  6. Step 6: Final answer
    x = 675.55

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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.