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Finding the Fourth Proportional to 538.37, 742.94 and 302.31

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Solution

The fourth proportional to 538.37, 742.94 and 302.31 is: 417.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.37 : 742.94 = 302.31 : x
  2. Step 2: Convert to fraction form
    538.37/742.94 = 302.31/x
  3. Step 3: Cross multiply
    538.37x = 742.94 × 302.31
  4. Step 4: Simplify right side
    538.37x = 224,596.68
  5. Step 5: Solve for x
    x = 224,596.68/538.37
  6. Step 6: Final answer
    x = 417.18

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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.