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Finding the Fourth Proportional to 505.36, 698.76 and 482

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Solution

The fourth proportional to 505.36, 698.76 and 482 is: 666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.36 : 698.76 = 482 : x
  2. Step 2: Convert to fraction form
    505.36/698.76 = 482/x
  3. Step 3: Cross multiply
    505.36x = 698.76 × 482
  4. Step 4: Simplify right side
    505.36x = 336,802.32
  5. Step 5: Solve for x
    x = 336,802.32/505.36
  6. Step 6: Final answer
    x = 666.46

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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.