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Finding the Fourth Proportional to 304.24, 455.87 and 213.04

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Solution

The fourth proportional to 304.24, 455.87 and 213.04 is: 319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.24 : 455.87 = 213.04 : x
  2. Step 2: Convert to fraction form
    304.24/455.87 = 213.04/x
  3. Step 3: Cross multiply
    304.24x = 455.87 × 213.04
  4. Step 4: Simplify right side
    304.24x = 97,117.48
  5. Step 5: Solve for x
    x = 97,117.48/304.24
  6. Step 6: Final answer
    x = 319.21

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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.