Home / 1,088.26-1,631.37-394.76

Finding the Fourth Proportional to 1,088.26, 1,631.37 and 394.76

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Solution

The fourth proportional to 1,088.26, 1,631.37 and 394.76 is: 591.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.26 : 1,631.37 = 394.76 : x
  2. Step 2: Convert to fraction form
    1,088.26/1,631.37 = 394.76/x
  3. Step 3: Cross multiply
    1,088.26x = 1,631.37 × 394.76
  4. Step 4: Simplify right side
    1,088.26x = 643,999.62
  5. Step 5: Solve for x
    x = 643,999.62/1,088.26
  6. Step 6: Final answer
    x = 591.77

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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.