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Finding the Fourth Proportional to 587.40, 881.39 and 415.17

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Solution

The fourth proportional to 587.40, 881.39 and 415.17 is: 622.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.40 : 881.39 = 415.17 : x
  2. Step 2: Convert to fraction form
    587.40/881.39 = 415.17/x
  3. Step 3: Cross multiply
    587.40x = 881.39 × 415.17
  4. Step 4: Simplify right side
    587.40x = 365,929.24
  5. Step 5: Solve for x
    x = 365,929.24/587.40
  6. Step 6: Final answer
    x = 622.96

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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.