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Finding the Fourth Proportional to 751.00, 1,036.32 and 419.41

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Solution

The fourth proportional to 751.00, 1,036.32 and 419.41 is: 578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.00 : 1,036.32 = 419.41 : x
  2. Step 2: Convert to fraction form
    751.00/1,036.32 = 419.41/x
  3. Step 3: Cross multiply
    751.00x = 1,036.32 × 419.41
  4. Step 4: Simplify right side
    751.00x = 434,641.43
  5. Step 5: Solve for x
    x = 434,641.43/751.00
  6. Step 6: Final answer
    x = 578.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.