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Finding the Fourth Proportional to 940.49, 1,410.57 and 291.23

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Solution

The fourth proportional to 940.49, 1,410.57 and 291.23 is: 436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.49 : 1,410.57 = 291.23 : x
  2. Step 2: Convert to fraction form
    940.49/1,410.57 = 291.23/x
  3. Step 3: Cross multiply
    940.49x = 1,410.57 × 291.23
  4. Step 4: Simplify right side
    940.49x = 410,800.30
  5. Step 5: Solve for x
    x = 410,800.30/940.49
  6. Step 6: Final answer
    x = 436.79

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Double scale
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1.5x scale

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.