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Finding the Fourth Proportional to 655.16, 981.81 and 346.37

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Solution

The fourth proportional to 655.16, 981.81 and 346.37 is: 519.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.16 : 981.81 = 346.37 : x
  2. Step 2: Convert to fraction form
    655.16/981.81 = 346.37/x
  3. Step 3: Cross multiply
    655.16x = 981.81 × 346.37
  4. Step 4: Simplify right side
    655.16x = 340,064.62
  5. Step 5: Solve for x
    x = 340,064.62/655.16
  6. Step 6: Final answer
    x = 519.06

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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.