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Finding the Fourth Proportional to 845.44, 1,268.16 and 434.08

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Solution

The fourth proportional to 845.44, 1,268.16 and 434.08 is: 651.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.44 : 1,268.16 = 434.08 : x
  2. Step 2: Convert to fraction form
    845.44/1,268.16 = 434.08/x
  3. Step 3: Cross multiply
    845.44x = 1,268.16 × 434.08
  4. Step 4: Simplify right side
    845.44x = 550,482.89
  5. Step 5: Solve for x
    x = 550,482.89/845.44
  6. Step 6: Final answer
    x = 651.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.