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Finding the Fourth Proportional to 437.38, 602.85 and 306.16

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Solution

The fourth proportional to 437.38, 602.85 and 306.16 is: 421.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.38 : 602.85 = 306.16 : x
  2. Step 2: Convert to fraction form
    437.38/602.85 = 306.16/x
  3. Step 3: Cross multiply
    437.38x = 602.85 × 306.16
  4. Step 4: Simplify right side
    437.38x = 184,568.56
  5. Step 5: Solve for x
    x = 184,568.56/437.38
  6. Step 6: Final answer
    x = 421.99

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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.