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Finding the Fourth Proportional to 587.70, 879.93 and 297.72

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Solution

The fourth proportional to 587.70, 879.93 and 297.72 is: 445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.70 : 879.93 = 297.72 : x
  2. Step 2: Convert to fraction form
    587.70/879.93 = 297.72/x
  3. Step 3: Cross multiply
    587.70x = 879.93 × 297.72
  4. Step 4: Simplify right side
    587.70x = 261,972.76
  5. Step 5: Solve for x
    x = 261,972.76/587.70
  6. Step 6: Final answer
    x = 445.76

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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.