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Finding the Fourth Proportional to 845.79, 1,266.03 and 651.54

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Solution

The fourth proportional to 845.79, 1,266.03 and 651.54 is: 975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.79 : 1,266.03 = 651.54 : x
  2. Step 2: Convert to fraction form
    845.79/1,266.03 = 651.54/x
  3. Step 3: Cross multiply
    845.79x = 1,266.03 × 651.54
  4. Step 4: Simplify right side
    845.79x = 824,873.93
  5. Step 5: Solve for x
    x = 824,873.93/845.79
  6. Step 6: Final answer
    x = 975.27

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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.