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Finding the Fourth Proportional to 1,188.60, 1,781.62 and 604.03

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Solution

The fourth proportional to 1,188.60, 1,781.62 and 604.03 is: 905.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188.60 : 1,781.62 = 604.03 : x
  2. Step 2: Convert to fraction form
    1,188.60/1,781.62 = 604.03/x
  3. Step 3: Cross multiply
    1,188.60x = 1,781.62 × 604.03
  4. Step 4: Simplify right side
    1,188.60x = 1,076,151.93
  5. Step 5: Solve for x
    x = 1,076,151.93/1,188.60
  6. Step 6: Final answer
    x = 905.39

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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.