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Finding the Fourth Proportional to 899.54, 1,349.49 and 274.79

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Solution

The fourth proportional to 899.54, 1,349.49 and 274.79 is: 412.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.54 : 1,349.49 = 274.79 : x
  2. Step 2: Convert to fraction form
    899.54/1,349.49 = 274.79/x
  3. Step 3: Cross multiply
    899.54x = 1,349.49 × 274.79
  4. Step 4: Simplify right side
    899.54x = 370,819.61
  5. Step 5: Solve for x
    x = 370,819.61/899.54
  6. Step 6: Final answer
    x = 412.23

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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.