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Finding the Fourth Proportional to 304.02, 453.81 and 257.87

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Solution

The fourth proportional to 304.02, 453.81 and 257.87 is: 384.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.02 : 453.81 = 257.87 : x
  2. Step 2: Convert to fraction form
    304.02/453.81 = 257.87/x
  3. Step 3: Cross multiply
    304.02x = 453.81 × 257.87
  4. Step 4: Simplify right side
    304.02x = 117,021.72
  5. Step 5: Solve for x
    x = 117,021.72/304.02
  6. Step 6: Final answer
    x = 384.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.