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Finding the Fourth Proportional to 587.70, 881.78 and 279.32

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Solution

The fourth proportional to 587.70, 881.78 and 279.32 is: 419.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.70 : 881.78 = 279.32 : x
  2. Step 2: Convert to fraction form
    587.70/881.78 = 279.32/x
  3. Step 3: Cross multiply
    587.70x = 881.78 × 279.32
  4. Step 4: Simplify right side
    587.70x = 246,292.98
  5. Step 5: Solve for x
    x = 246,292.98/587.70
  6. Step 6: Final answer
    x = 419.08

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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.