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Finding the Fourth Proportional to 505.52, 756.12 and 299.60

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Solution

The fourth proportional to 505.52, 756.12 and 299.60 is: 448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.52 : 756.12 = 299.60 : x
  2. Step 2: Convert to fraction form
    505.52/756.12 = 299.60/x
  3. Step 3: Cross multiply
    505.52x = 756.12 × 299.60
  4. Step 4: Simplify right side
    505.52x = 226,533.55
  5. Step 5: Solve for x
    x = 226,533.55/505.52
  6. Step 6: Final answer
    x = 448.12

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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.