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Finding the Fourth Proportional to 402.08, 553.68 and 373.04

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Solution

The fourth proportional to 402.08, 553.68 and 373.04 is: 513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.08 : 553.68 = 373.04 : x
  2. Step 2: Convert to fraction form
    402.08/553.68 = 373.04/x
  3. Step 3: Cross multiply
    402.08x = 553.68 × 373.04
  4. Step 4: Simplify right side
    402.08x = 206,544.79
  5. Step 5: Solve for x
    x = 206,544.79/402.08
  6. Step 6: Final answer
    x = 513.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.