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Finding the Fourth Proportional to 751.00, 1,126.28 and 288.74

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Solution

The fourth proportional to 751.00, 1,126.28 and 288.74 is: 433.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.00 : 1,126.28 = 288.74 : x
  2. Step 2: Convert to fraction form
    751.00/1,126.28 = 288.74/x
  3. Step 3: Cross multiply
    751.00x = 1,126.28 × 288.74
  4. Step 4: Simplify right side
    751.00x = 325,200.64
  5. Step 5: Solve for x
    x = 325,200.64/751.00
  6. Step 6: Final answer
    x = 433.03

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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.