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Finding the Fourth Proportional to 304.29, 456.45 and 87.87

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Solution

The fourth proportional to 304.29, 456.45 and 87.87 is: 131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.29 : 456.45 = 87.87 : x
  2. Step 2: Convert to fraction form
    304.29/456.45 = 87.87/x
  3. Step 3: Cross multiply
    304.29x = 456.45 × 87.87
  4. Step 4: Simplify right side
    304.29x = 40,108.26
  5. Step 5: Solve for x
    x = 40,108.26/304.29
  6. Step 6: Final answer
    x = 131.81

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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.