Home / 759.03-1,047.36-427.40

Finding the Fourth Proportional to 759.03, 1,047.36 and 427.40

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Solution

The fourth proportional to 759.03, 1,047.36 and 427.40 is: 589.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.03 : 1,047.36 = 427.40 : x
  2. Step 2: Convert to fraction form
    759.03/1,047.36 = 427.40/x
  3. Step 3: Cross multiply
    759.03x = 1,047.36 × 427.40
  4. Step 4: Simplify right side
    759.03x = 447,641.66
  5. Step 5: Solve for x
    x = 447,641.66/759.03
  6. Step 6: Final answer
    x = 589.75

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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.