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Finding the Fourth Proportional to 940.18, 1,409.91 and 529.51

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Solution

The fourth proportional to 940.18, 1,409.91 and 529.51 is: 794.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.18 : 1,409.91 = 529.51 : x
  2. Step 2: Convert to fraction form
    940.18/1,409.91 = 529.51/x
  3. Step 3: Cross multiply
    940.18x = 1,409.91 × 529.51
  4. Step 4: Simplify right side
    940.18x = 746,561.44
  5. Step 5: Solve for x
    x = 746,561.44/940.18
  6. Step 6: Final answer
    x = 794.06

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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.