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Finding the Fourth Proportional to 288.09, 432.12 and 284.04

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Solution

The fourth proportional to 288.09, 432.12 and 284.04 is: 426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.09 : 432.12 = 284.04 : x
  2. Step 2: Convert to fraction form
    288.09/432.12 = 284.04/x
  3. Step 3: Cross multiply
    288.09x = 432.12 × 284.04
  4. Step 4: Simplify right side
    288.09x = 122,739.36
  5. Step 5: Solve for x
    x = 122,739.36/288.09
  6. Step 6: Final answer
    x = 426.05

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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.