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Finding the Fourth Proportional to 436.44, 602.16 and 305.16

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Solution

The fourth proportional to 436.44, 602.16 and 305.16 is: 421.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.44 : 602.16 = 305.16 : x
  2. Step 2: Convert to fraction form
    436.44/602.16 = 305.16/x
  3. Step 3: Cross multiply
    436.44x = 602.16 × 305.16
  4. Step 4: Simplify right side
    436.44x = 183,755.15
  5. Step 5: Solve for x
    x = 183,755.15/436.44
  6. Step 6: Final answer
    x = 421.03

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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.