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Finding the Fourth Proportional to 949.48, 1,310.38 and 535.48

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Solution

The fourth proportional to 949.48, 1,310.38 and 535.48 is: 739.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.48 : 1,310.38 = 535.48 : x
  2. Step 2: Convert to fraction form
    949.48/1,310.38 = 535.48/x
  3. Step 3: Cross multiply
    949.48x = 1,310.38 × 535.48
  4. Step 4: Simplify right side
    949.48x = 701,682.28
  5. Step 5: Solve for x
    x = 701,682.28/949.48
  6. Step 6: Final answer
    x = 739.02

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.