Home / 1,377.55-2,066.34-403.67

Finding the Fourth Proportional to 1,377.55, 2,066.34 and 403.67

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Solution

The fourth proportional to 1,377.55, 2,066.34 and 403.67 is: 605.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.55 : 2,066.34 = 403.67 : x
  2. Step 2: Convert to fraction form
    1,377.55/2,066.34 = 403.67/x
  3. Step 3: Cross multiply
    1,377.55x = 2,066.34 × 403.67
  4. Step 4: Simplify right side
    1,377.55x = 834,116.13
  5. Step 5: Solve for x
    x = 834,116.13/1,377.55
  6. Step 6: Final answer
    x = 605.51

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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.