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Finding the Fourth Proportional to 440.08, 607.62 and 309.26

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Solution

The fourth proportional to 440.08, 607.62 and 309.26 is: 427.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.08 : 607.62 = 309.26 : x
  2. Step 2: Convert to fraction form
    440.08/607.62 = 309.26/x
  3. Step 3: Cross multiply
    440.08x = 607.62 × 309.26
  4. Step 4: Simplify right side
    440.08x = 187,912.56
  5. Step 5: Solve for x
    x = 187,912.56/440.08
  6. Step 6: Final answer
    x = 427.00

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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.