Home / 1,040.93-1,436.36-621.30

Finding the Fourth Proportional to 1,040.93, 1,436.36 and 621.30

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Solution

The fourth proportional to 1,040.93, 1,436.36 and 621.30 is: 857.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.93 : 1,436.36 = 621.30 : x
  2. Step 2: Convert to fraction form
    1,040.93/1,436.36 = 621.30/x
  3. Step 3: Cross multiply
    1,040.93x = 1,436.36 × 621.30
  4. Step 4: Simplify right side
    1,040.93x = 892,407.36
  5. Step 5: Solve for x
    x = 892,407.36/1,040.93
  6. Step 6: Final answer
    x = 857.32

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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.