Home / 1,393.37-2,090.05-339.19

Finding the Fourth Proportional to 1,393.37, 2,090.05 and 339.19

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Solution

The fourth proportional to 1,393.37, 2,090.05 and 339.19 is: 508.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.37 : 2,090.05 = 339.19 : x
  2. Step 2: Convert to fraction form
    1,393.37/2,090.05 = 339.19/x
  3. Step 3: Cross multiply
    1,393.37x = 2,090.05 × 339.19
  4. Step 4: Simplify right side
    1,393.37x = 708,929.74
  5. Step 5: Solve for x
    x = 708,929.74/1,393.37
  6. Step 6: Final answer
    x = 508.79

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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.