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Finding the Fourth Proportional to 860.37, 1,290.06 and 583.05

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Solution

The fourth proportional to 860.37, 1,290.06 and 583.05 is: 874.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    860.37 : 1,290.06 = 583.05 : x
  2. Step 2: Convert to fraction form
    860.37/1,290.06 = 583.05/x
  3. Step 3: Cross multiply
    860.37x = 1,290.06 × 583.05
  4. Step 4: Simplify right side
    860.37x = 752,169.48
  5. Step 5: Solve for x
    x = 752,169.48/860.37
  6. Step 6: Final answer
    x = 874.24

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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.