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Finding the Fourth Proportional to 949.05, 1,415.95 and 845.10

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Solution

The fourth proportional to 949.05, 1,415.95 and 845.10 is: 1,260.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.05 : 1,415.95 = 845.10 : x
  2. Step 2: Convert to fraction form
    949.05/1,415.95 = 845.10/x
  3. Step 3: Cross multiply
    949.05x = 1,415.95 × 845.10
  4. Step 4: Simplify right side
    949.05x = 1,196,617.23
  5. Step 5: Solve for x
    x = 1,196,617.23/949.05
  6. Step 6: Final answer
    x = 1,260.86

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.