Home / 751.03-1,126.51-438.85

Finding the Fourth Proportional to 751.03, 1,126.51 and 438.85

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Solution

The fourth proportional to 751.03, 1,126.51 and 438.85 is: 658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.03 : 1,126.51 = 438.85 : x
  2. Step 2: Convert to fraction form
    751.03/1,126.51 = 438.85/x
  3. Step 3: Cross multiply
    751.03x = 1,126.51 × 438.85
  4. Step 4: Simplify right side
    751.03x = 494,369.22
  5. Step 5: Solve for x
    x = 494,369.22/751.03
  6. Step 6: Final answer
    x = 658.25

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1.5x scale

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.