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Finding the Fourth Proportional to 287.09, 430.36 and 184.09

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Solution

The fourth proportional to 287.09, 430.36 and 184.09 is: 275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.09 : 430.36 = 184.09 : x
  2. Step 2: Convert to fraction form
    287.09/430.36 = 184.09/x
  3. Step 3: Cross multiply
    287.09x = 430.36 × 184.09
  4. Step 4: Simplify right side
    287.09x = 79,224.97
  5. Step 5: Solve for x
    x = 79,224.97/287.09
  6. Step 6: Final answer
    x = 275.96

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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.