Home / 1,239.04-1,858.42-314.56

Finding the Fourth Proportional to 1,239.04, 1,858.42 and 314.56

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Solution

The fourth proportional to 1,239.04, 1,858.42 and 314.56 is: 471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.04 : 1,858.42 = 314.56 : x
  2. Step 2: Convert to fraction form
    1,239.04/1,858.42 = 314.56/x
  3. Step 3: Cross multiply
    1,239.04x = 1,858.42 × 314.56
  4. Step 4: Simplify right side
    1,239.04x = 584,584.60
  5. Step 5: Solve for x
    x = 584,584.60/1,239.04
  6. Step 6: Final answer
    x = 471.80

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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.