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Finding the Fourth Proportional to 1,749.32, 2,624.80 and 775.30

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Solution

The fourth proportional to 1,749.32, 2,624.80 and 775.30 is: 1,163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.32 : 2,624.80 = 775.30 : x
  2. Step 2: Convert to fraction form
    1,749.32/2,624.80 = 775.30/x
  3. Step 3: Cross multiply
    1,749.32x = 2,624.80 × 775.30
  4. Step 4: Simplify right side
    1,749.32x = 2,035,007.44
  5. Step 5: Solve for x
    x = 2,035,007.44/1,749.32
  6. Step 6: Final answer
    x = 1,163.31

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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.