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Finding the Fourth Proportional to 589.55, 883.12 and 280.47

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Solution

The fourth proportional to 589.55, 883.12 and 280.47 is: 420.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.55 : 883.12 = 280.47 : x
  2. Step 2: Convert to fraction form
    589.55/883.12 = 280.47/x
  3. Step 3: Cross multiply
    589.55x = 883.12 × 280.47
  4. Step 4: Simplify right side
    589.55x = 247,688.67
  5. Step 5: Solve for x
    x = 247,688.67/589.55
  6. Step 6: Final answer
    x = 420.13

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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.