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Finding the Fourth Proportional to 415.40, 552.04 and 415.40

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Solution

The fourth proportional to 415.40, 552.04 and 415.40 is: 552.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.40 : 552.04 = 415.40 : x
  2. Step 2: Convert to fraction form
    415.40/552.04 = 415.40/x
  3. Step 3: Cross multiply
    415.40x = 552.04 × 415.40
  4. Step 4: Simplify right side
    415.40x = 229,317.42
  5. Step 5: Solve for x
    x = 229,317.42/415.40
  6. Step 6: Final answer
    x = 552.04

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.