Home / 1,131.34-1,697.20-351.16

Finding the Fourth Proportional to 1,131.34, 1,697.20 and 351.16

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Solution

The fourth proportional to 1,131.34, 1,697.20 and 351.16 is: 526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.34 : 1,697.20 = 351.16 : x
  2. Step 2: Convert to fraction form
    1,131.34/1,697.20 = 351.16/x
  3. Step 3: Cross multiply
    1,131.34x = 1,697.20 × 351.16
  4. Step 4: Simplify right side
    1,131.34x = 595,990.38
  5. Step 5: Solve for x
    x = 595,990.38/1,131.34
  6. Step 6: Final answer
    x = 526.80

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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.