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Finding the Fourth Proportional to 587.60, 880.20 and 442.88

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Solution

The fourth proportional to 587.60, 880.20 and 442.88 is: 663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.60 : 880.20 = 442.88 : x
  2. Step 2: Convert to fraction form
    587.60/880.20 = 442.88/x
  3. Step 3: Cross multiply
    587.60x = 880.20 × 442.88
  4. Step 4: Simplify right side
    587.60x = 389,822.98
  5. Step 5: Solve for x
    x = 389,822.98/587.60
  6. Step 6: Final answer
    x = 663.42

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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.