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Finding the Fourth Proportional to 659.72, 989.94 and 468.92

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Solution

The fourth proportional to 659.72, 989.94 and 468.92 is: 703.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.72 : 989.94 = 468.92 : x
  2. Step 2: Convert to fraction form
    659.72/989.94 = 468.92/x
  3. Step 3: Cross multiply
    659.72x = 989.94 × 468.92
  4. Step 4: Simplify right side
    659.72x = 464,202.66
  5. Step 5: Solve for x
    x = 464,202.66/659.72
  6. Step 6: Final answer
    x = 703.64

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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.