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Finding the Fourth Proportional to 587.17, 878.79 and 403.57

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Solution

The fourth proportional to 587.17, 878.79 and 403.57 is: 604.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.17 : 878.79 = 403.57 : x
  2. Step 2: Convert to fraction form
    587.17/878.79 = 403.57/x
  3. Step 3: Cross multiply
    587.17x = 878.79 × 403.57
  4. Step 4: Simplify right side
    587.17x = 354,653.28
  5. Step 5: Solve for x
    x = 354,653.28/587.17
  6. Step 6: Final answer
    x = 604.00

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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.