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Finding the Fourth Proportional to 537.91, 745.45 and 528.19

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Solution

The fourth proportional to 537.91, 745.45 and 528.19 is: 731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.91 : 745.45 = 528.19 : x
  2. Step 2: Convert to fraction form
    537.91/745.45 = 528.19/x
  3. Step 3: Cross multiply
    537.91x = 745.45 × 528.19
  4. Step 4: Simplify right side
    537.91x = 393,739.24
  5. Step 5: Solve for x
    x = 393,739.24/537.91
  6. Step 6: Final answer
    x = 731.98

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.