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Finding the Fourth Proportional to 584.96, 876.60 and 311.28

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Solution

The fourth proportional to 584.96, 876.60 and 311.28 is: 466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.96 : 876.60 = 311.28 : x
  2. Step 2: Convert to fraction form
    584.96/876.60 = 311.28/x
  3. Step 3: Cross multiply
    584.96x = 876.60 × 311.28
  4. Step 4: Simplify right side
    584.96x = 272,868.05
  5. Step 5: Solve for x
    x = 272,868.05/584.96
  6. Step 6: Final answer
    x = 466.47

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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.