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Finding the Fourth Proportional to 890.66, 1,336.09 and 371.01

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Solution

The fourth proportional to 890.66, 1,336.09 and 371.01 is: 556.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.66 : 1,336.09 = 371.01 : x
  2. Step 2: Convert to fraction form
    890.66/1,336.09 = 371.01/x
  3. Step 3: Cross multiply
    890.66x = 1,336.09 × 371.01
  4. Step 4: Simplify right side
    890.66x = 495,703.21
  5. Step 5: Solve for x
    x = 495,703.21/890.66
  6. Step 6: Final answer
    x = 556.56

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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.