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Finding the Fourth Proportional to 287.34, 430.99 and 94.96

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Solution

The fourth proportional to 287.34, 430.99 and 94.96 is: 142.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.34 : 430.99 = 94.96 : x
  2. Step 2: Convert to fraction form
    287.34/430.99 = 94.96/x
  3. Step 3: Cross multiply
    287.34x = 430.99 × 94.96
  4. Step 4: Simplify right side
    287.34x = 40,926.81
  5. Step 5: Solve for x
    x = 40,926.81/287.34
  6. Step 6: Final answer
    x = 142.43

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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.