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Finding the Fourth Proportional to 282.96, 424.43 and 145.94

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Solution

The fourth proportional to 282.96, 424.43 and 145.94 is: 218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.96 : 424.43 = 145.94 : x
  2. Step 2: Convert to fraction form
    282.96/424.43 = 145.94/x
  3. Step 3: Cross multiply
    282.96x = 424.43 × 145.94
  4. Step 4: Simplify right side
    282.96x = 61,939.19
  5. Step 5: Solve for x
    x = 61,939.19/282.96
  6. Step 6: Final answer
    x = 218.90

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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.