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Finding the Fourth Proportional to 554.89, 835.41 and 490.26

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Solution

The fourth proportional to 554.89, 835.41 and 490.26 is: 738.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.89 : 835.41 = 490.26 : x
  2. Step 2: Convert to fraction form
    554.89/835.41 = 490.26/x
  3. Step 3: Cross multiply
    554.89x = 835.41 × 490.26
  4. Step 4: Simplify right side
    554.89x = 409,569.95
  5. Step 5: Solve for x
    x = 409,569.95/554.89
  6. Step 6: Final answer
    x = 738.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.