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Finding the Fourth Proportional to 659.58, 989.72 and 294.62

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Solution

The fourth proportional to 659.58, 989.72 and 294.62 is: 442.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.58 : 989.72 = 294.62 : x
  2. Step 2: Convert to fraction form
    659.58/989.72 = 294.62/x
  3. Step 3: Cross multiply
    659.58x = 989.72 × 294.62
  4. Step 4: Simplify right side
    659.58x = 291,584.88
  5. Step 5: Solve for x
    x = 291,584.88/659.58
  6. Step 6: Final answer
    x = 442.08

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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.