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Finding the Fourth Proportional to 655.45, 983.15 and 309.02

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Solution

The fourth proportional to 655.45, 983.15 and 309.02 is: 463.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.45 : 983.15 = 309.02 : x
  2. Step 2: Convert to fraction form
    655.45/983.15 = 309.02/x
  3. Step 3: Cross multiply
    655.45x = 983.15 × 309.02
  4. Step 4: Simplify right side
    655.45x = 303,808.10
  5. Step 5: Solve for x
    x = 303,808.10/655.45
  6. Step 6: Final answer
    x = 463.51

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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.