Home / 1,339.09-2,008.29-401.85

Finding the Fourth Proportional to 1,339.09, 2,008.29 and 401.85

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Solution

The fourth proportional to 1,339.09, 2,008.29 and 401.85 is: 602.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.09 : 2,008.29 = 401.85 : x
  2. Step 2: Convert to fraction form
    1,339.09/2,008.29 = 401.85/x
  3. Step 3: Cross multiply
    1,339.09x = 2,008.29 × 401.85
  4. Step 4: Simplify right side
    1,339.09x = 807,031.34
  5. Step 5: Solve for x
    x = 807,031.34/1,339.09
  6. Step 6: Final answer
    x = 602.67

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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.