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Finding the Fourth Proportional to 659.96, 909.76 and 554.25

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Solution

The fourth proportional to 659.96, 909.76 and 554.25 is: 764.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.96 : 909.76 = 554.25 : x
  2. Step 2: Convert to fraction form
    659.96/909.76 = 554.25/x
  3. Step 3: Cross multiply
    659.96x = 909.76 × 554.25
  4. Step 4: Simplify right side
    659.96x = 504,234.48
  5. Step 5: Solve for x
    x = 504,234.48/659.96
  6. Step 6: Final answer
    x = 764.04

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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.