Home / 1,040.37-1,560.44-309.95

Finding the Fourth Proportional to 1,040.37, 1,560.44 and 309.95

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Solution

The fourth proportional to 1,040.37, 1,560.44 and 309.95 is: 464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.37 : 1,560.44 = 309.95 : x
  2. Step 2: Convert to fraction form
    1,040.37/1,560.44 = 309.95/x
  3. Step 3: Cross multiply
    1,040.37x = 1,560.44 × 309.95
  4. Step 4: Simplify right side
    1,040.37x = 483,657.20
  5. Step 5: Solve for x
    x = 483,657.20/1,040.37
  6. Step 6: Final answer
    x = 464.89

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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.