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Finding the Fourth Proportional to 896.91, 1,345.38 and 348.99

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Solution

The fourth proportional to 896.91, 1,345.38 and 348.99 is: 523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.91 : 1,345.38 = 348.99 : x
  2. Step 2: Convert to fraction form
    896.91/1,345.38 = 348.99/x
  3. Step 3: Cross multiply
    896.91x = 1,345.38 × 348.99
  4. Step 4: Simplify right side
    896.91x = 469,517.81
  5. Step 5: Solve for x
    x = 469,517.81/896.91
  6. Step 6: Final answer
    x = 523.49

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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.