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Finding the Fourth Proportional to 402.83, 603.08 and 248.30

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Solution

The fourth proportional to 402.83, 603.08 and 248.30 is: 371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.83 : 603.08 = 248.30 : x
  2. Step 2: Convert to fraction form
    402.83/603.08 = 248.30/x
  3. Step 3: Cross multiply
    402.83x = 603.08 × 248.30
  4. Step 4: Simplify right side
    402.83x = 149,740.51
  5. Step 5: Solve for x
    x = 149,740.51/402.83
  6. Step 6: Final answer
    x = 371.72

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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.