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Finding the Fourth Proportional to 589.64, 883.88 and 280.96

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Solution

The fourth proportional to 589.64, 883.88 and 280.96 is: 421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.64 : 883.88 = 280.96 : x
  2. Step 2: Convert to fraction form
    589.64/883.88 = 280.96/x
  3. Step 3: Cross multiply
    589.64x = 883.88 × 280.96
  4. Step 4: Simplify right side
    589.64x = 248,334.92
  5. Step 5: Solve for x
    x = 248,334.92/589.64
  6. Step 6: Final answer
    x = 421.16

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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.