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Finding the Fourth Proportional to 587.35, 880.75 and 221.87

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Solution

The fourth proportional to 587.35, 880.75 and 221.87 is: 332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.35 : 880.75 = 221.87 : x
  2. Step 2: Convert to fraction form
    587.35/880.75 = 221.87/x
  3. Step 3: Cross multiply
    587.35x = 880.75 × 221.87
  4. Step 4: Simplify right side
    587.35x = 195,410.89
  5. Step 5: Solve for x
    x = 195,410.89/587.35
  6. Step 6: Final answer
    x = 332.70

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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.