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Finding the Fourth Proportional to 487.35, 669.14 and 474.67

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Solution

The fourth proportional to 487.35, 669.14 and 474.67 is: 651.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.35 : 669.14 = 474.67 : x
  2. Step 2: Convert to fraction form
    487.35/669.14 = 474.67/x
  3. Step 3: Cross multiply
    487.35x = 669.14 × 474.67
  4. Step 4: Simplify right side
    487.35x = 317,620.20
  5. Step 5: Solve for x
    x = 317,620.20/487.35
  6. Step 6: Final answer
    x = 651.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.