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Finding the Fourth Proportional to 357.68, 533.44 and 309.26

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Solution

The fourth proportional to 357.68, 533.44 and 309.26 is: 461.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.68 : 533.44 = 309.26 : x
  2. Step 2: Convert to fraction form
    357.68/533.44 = 309.26/x
  3. Step 3: Cross multiply
    357.68x = 533.44 × 309.26
  4. Step 4: Simplify right side
    357.68x = 164,971.65
  5. Step 5: Solve for x
    x = 164,971.65/357.68
  6. Step 6: Final answer
    x = 461.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.