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Finding the Fourth Proportional to 587.58, 881.61 and 279.70

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Solution

The fourth proportional to 587.58, 881.61 and 279.70 is: 419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.58 : 881.61 = 279.70 : x
  2. Step 2: Convert to fraction form
    587.58/881.61 = 279.70/x
  3. Step 3: Cross multiply
    587.58x = 881.61 × 279.70
  4. Step 4: Simplify right side
    587.58x = 246,588.81
  5. Step 5: Solve for x
    x = 246,588.81/587.58
  6. Step 6: Final answer
    x = 419.67

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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.