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Finding the Fourth Proportional to 505.84, 698.14 and 482.75

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Solution

The fourth proportional to 505.84, 698.14 and 482.75 is: 666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.84 : 698.14 = 482.75 : x
  2. Step 2: Convert to fraction form
    505.84/698.14 = 482.75/x
  3. Step 3: Cross multiply
    505.84x = 698.14 × 482.75
  4. Step 4: Simplify right side
    505.84x = 337,030.04
  5. Step 5: Solve for x
    x = 337,030.04/505.84
  6. Step 6: Final answer
    x = 666.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.