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Finding the Fourth Proportional to 312.37, 468.56 and 283.21

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Solution

The fourth proportional to 312.37, 468.56 and 283.21 is: 424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.37 : 468.56 = 283.21 : x
  2. Step 2: Convert to fraction form
    312.37/468.56 = 283.21/x
  3. Step 3: Cross multiply
    312.37x = 468.56 × 283.21
  4. Step 4: Simplify right side
    312.37x = 132,700.88
  5. Step 5: Solve for x
    x = 132,700.88/312.37
  6. Step 6: Final answer
    x = 424.82

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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.