Home / 1,377.18-2,066.18-403.28

Finding the Fourth Proportional to 1,377.18, 2,066.18 and 403.28

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Solution

The fourth proportional to 1,377.18, 2,066.18 and 403.28 is: 605.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.18 : 2,066.18 = 403.28 : x
  2. Step 2: Convert to fraction form
    1,377.18/2,066.18 = 403.28/x
  3. Step 3: Cross multiply
    1,377.18x = 2,066.18 × 403.28
  4. Step 4: Simplify right side
    1,377.18x = 833,247.87
  5. Step 5: Solve for x
    x = 833,247.87/1,377.18
  6. Step 6: Final answer
    x = 605.04

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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.