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Finding the Fourth Proportional to 508.37, 762.39 and 302.72

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Solution

The fourth proportional to 508.37, 762.39 and 302.72 is: 453.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.37 : 762.39 = 302.72 : x
  2. Step 2: Convert to fraction form
    508.37/762.39 = 302.72/x
  3. Step 3: Cross multiply
    508.37x = 762.39 × 302.72
  4. Step 4: Simplify right side
    508.37x = 230,786.89
  5. Step 5: Solve for x
    x = 230,786.89/508.37
  6. Step 6: Final answer
    x = 453.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.