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Finding the Fourth Proportional to 940.38, 1,410.55 and 247.10

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Solution

The fourth proportional to 940.38, 1,410.55 and 247.10 is: 370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.38 : 1,410.55 = 247.10 : x
  2. Step 2: Convert to fraction form
    940.38/1,410.55 = 247.10/x
  3. Step 3: Cross multiply
    940.38x = 1,410.55 × 247.10
  4. Step 4: Simplify right side
    940.38x = 348,539.23
  5. Step 5: Solve for x
    x = 348,539.23/940.38
  6. Step 6: Final answer
    x = 370.64

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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.