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Finding the Fourth Proportional to 720.60, 994.50 and 440.96

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Solution

The fourth proportional to 720.60, 994.50 and 440.96 is: 608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.60 : 994.50 = 440.96 : x
  2. Step 2: Convert to fraction form
    720.60/994.50 = 440.96/x
  3. Step 3: Cross multiply
    720.60x = 994.50 × 440.96
  4. Step 4: Simplify right side
    720.60x = 438,534.72
  5. Step 5: Solve for x
    x = 438,534.72/720.60
  6. Step 6: Final answer
    x = 608.57

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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.