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Finding the Fourth Proportional to 1,254.74, 1,729.83 and 835.11

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Solution

The fourth proportional to 1,254.74, 1,729.83 and 835.11 is: 1,151.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.74 : 1,729.83 = 835.11 : x
  2. Step 2: Convert to fraction form
    1,254.74/1,729.83 = 835.11/x
  3. Step 3: Cross multiply
    1,254.74x = 1,729.83 × 835.11
  4. Step 4: Simplify right side
    1,254.74x = 1,444,598.33
  5. Step 5: Solve for x
    x = 1,444,598.33/1,254.74
  6. Step 6: Final answer
    x = 1,151.32

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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.