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Finding the Fourth Proportional to 845.15, 1,263.56 and 716.59

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Solution

The fourth proportional to 845.15, 1,263.56 and 716.59 is: 1,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.15 : 1,263.56 = 716.59 : x
  2. Step 2: Convert to fraction form
    845.15/1,263.56 = 716.59/x
  3. Step 3: Cross multiply
    845.15x = 1,263.56 × 716.59
  4. Step 4: Simplify right side
    845.15x = 905,454.46
  5. Step 5: Solve for x
    x = 905,454.46/845.15
  6. Step 6: Final answer
    x = 1,071.35

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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.