Home / 1,312.18-1,968.26-338.27

Finding the Fourth Proportional to 1,312.18, 1,968.26 and 338.27

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Solution

The fourth proportional to 1,312.18, 1,968.26 and 338.27 is: 507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.18 : 1,968.26 = 338.27 : x
  2. Step 2: Convert to fraction form
    1,312.18/1,968.26 = 338.27/x
  3. Step 3: Cross multiply
    1,312.18x = 1,968.26 × 338.27
  4. Step 4: Simplify right side
    1,312.18x = 665,791.78
  5. Step 5: Solve for x
    x = 665,791.78/1,312.18
  6. Step 6: Final answer
    x = 507.39

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1.5x scale

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.