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Finding the Fourth Proportional to 940.54, 1,297.92 and 526.54

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Solution

The fourth proportional to 940.54, 1,297.92 and 526.54 is: 726.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.54 : 1,297.92 = 526.54 : x
  2. Step 2: Convert to fraction form
    940.54/1,297.92 = 526.54/x
  3. Step 3: Cross multiply
    940.54x = 1,297.92 × 526.54
  4. Step 4: Simplify right side
    940.54x = 683,406.80
  5. Step 5: Solve for x
    x = 683,406.80/940.54
  6. Step 6: Final answer
    x = 726.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.