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Finding the Fourth Proportional to 589.68, 883.95 and 281.45

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Solution

The fourth proportional to 589.68, 883.95 and 281.45 is: 421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.68 : 883.95 = 281.45 : x
  2. Step 2: Convert to fraction form
    589.68/883.95 = 281.45/x
  3. Step 3: Cross multiply
    589.68x = 883.95 × 281.45
  4. Step 4: Simplify right side
    589.68x = 248,786.40
  5. Step 5: Solve for x
    x = 248,786.40/589.68
  6. Step 6: Final answer
    x = 421.90

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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.