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Finding the Fourth Proportional to 486.02, 729.08 and 197.48

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Solution

The fourth proportional to 486.02, 729.08 and 197.48 is: 296.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.02 : 729.08 = 197.48 : x
  2. Step 2: Convert to fraction form
    486.02/729.08 = 197.48/x
  3. Step 3: Cross multiply
    486.02x = 729.08 × 197.48
  4. Step 4: Simplify right side
    486.02x = 143,978.72
  5. Step 5: Solve for x
    x = 143,978.72/486.02
  6. Step 6: Final answer
    x = 296.24

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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.