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Finding the Fourth Proportional to 437.68, 602.42 and 306.46

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Solution

The fourth proportional to 437.68, 602.42 and 306.46 is: 421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.68 : 602.42 = 306.46 : x
  2. Step 2: Convert to fraction form
    437.68/602.42 = 306.46/x
  3. Step 3: Cross multiply
    437.68x = 602.42 × 306.46
  4. Step 4: Simplify right side
    437.68x = 184,618.58
  5. Step 5: Solve for x
    x = 184,618.58/437.68
  6. Step 6: Final answer
    x = 421.81

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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.