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Finding the Fourth Proportional to 758.07, 1,137.12 and 210.27

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Solution

The fourth proportional to 758.07, 1,137.12 and 210.27 is: 315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.07 : 1,137.12 = 210.27 : x
  2. Step 2: Convert to fraction form
    758.07/1,137.12 = 210.27/x
  3. Step 3: Cross multiply
    758.07x = 1,137.12 × 210.27
  4. Step 4: Simplify right side
    758.07x = 239,102.22
  5. Step 5: Solve for x
    x = 239,102.22/758.07
  6. Step 6: Final answer
    x = 315.41

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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.