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Finding the Fourth Proportional to 655.76, 978.87 and 606.96

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Solution

The fourth proportional to 655.76, 978.87 and 606.96 is: 906.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.76 : 978.87 = 606.96 : x
  2. Step 2: Convert to fraction form
    655.76/978.87 = 606.96/x
  3. Step 3: Cross multiply
    655.76x = 978.87 × 606.96
  4. Step 4: Simplify right side
    655.76x = 594,134.94
  5. Step 5: Solve for x
    x = 594,134.94/655.76
  6. Step 6: Final answer
    x = 906.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.