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Finding the Fourth Proportional to 602.40, 902.36 and 558.61

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Solution

The fourth proportional to 602.40, 902.36 and 558.61 is: 836.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.40 : 902.36 = 558.61 : x
  2. Step 2: Convert to fraction form
    602.40/902.36 = 558.61/x
  3. Step 3: Cross multiply
    602.40x = 902.36 × 558.61
  4. Step 4: Simplify right side
    602.40x = 504,067.75
  5. Step 5: Solve for x
    x = 504,067.75/602.40
  6. Step 6: Final answer
    x = 836.76

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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.