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Finding the Fourth Proportional to 283.48, 424.86 and 121.00

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Solution

The fourth proportional to 283.48, 424.86 and 121.00 is: 181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.48 : 424.86 = 121.00 : x
  2. Step 2: Convert to fraction form
    283.48/424.86 = 121.00/x
  3. Step 3: Cross multiply
    283.48x = 424.86 × 121.00
  4. Step 4: Simplify right side
    283.48x = 51,406.54
  5. Step 5: Solve for x
    x = 51,406.54/283.48
  6. Step 6: Final answer
    x = 181.34

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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.