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Finding the Fourth Proportional to 890.83, 1,229.13 and 607.33

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Solution

The fourth proportional to 890.83, 1,229.13 and 607.33 is: 837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.83 : 1,229.13 = 607.33 : x
  2. Step 2: Convert to fraction form
    890.83/1,229.13 = 607.33/x
  3. Step 3: Cross multiply
    890.83x = 1,229.13 × 607.33
  4. Step 4: Simplify right side
    890.83x = 746,487.52
  5. Step 5: Solve for x
    x = 746,487.52/890.83
  6. Step 6: Final answer
    x = 837.97

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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.