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Finding the Fourth Proportional to 282.32, 423.48 and 89.94

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Solution

The fourth proportional to 282.32, 423.48 and 89.94 is: 134.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.32 : 423.48 = 89.94 : x
  2. Step 2: Convert to fraction form
    282.32/423.48 = 89.94/x
  3. Step 3: Cross multiply
    282.32x = 423.48 × 89.94
  4. Step 4: Simplify right side
    282.32x = 38,087.79
  5. Step 5: Solve for x
    x = 38,087.79/282.32
  6. Step 6: Final answer
    x = 134.91

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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.