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Finding the Fourth Proportional to 349.55, 524.42 and 311.30

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Solution

The fourth proportional to 349.55, 524.42 and 311.30 is: 467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.55 : 524.42 = 311.30 : x
  2. Step 2: Convert to fraction form
    349.55/524.42 = 311.30/x
  3. Step 3: Cross multiply
    349.55x = 524.42 × 311.30
  4. Step 4: Simplify right side
    349.55x = 163,253.02
  5. Step 5: Solve for x
    x = 163,253.02/349.55
  6. Step 6: Final answer
    x = 467.03

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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.