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Finding the Fourth Proportional to 890.37, 1,227.56 and 730.26

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Solution

The fourth proportional to 890.37, 1,227.56 and 730.26 is: 1,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.37 : 1,227.56 = 730.26 : x
  2. Step 2: Convert to fraction form
    890.37/1,227.56 = 730.26/x
  3. Step 3: Cross multiply
    890.37x = 1,227.56 × 730.26
  4. Step 4: Simplify right side
    890.37x = 896,434.31
  5. Step 5: Solve for x
    x = 896,434.31/890.37
  6. Step 6: Final answer
    x = 1,006.81

Related Problems

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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.