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Finding the Fourth Proportional to 495.36, 683.51 and 285.54

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Solution

The fourth proportional to 495.36, 683.51 and 285.54 is: 394.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.36 : 683.51 = 285.54 : x
  2. Step 2: Convert to fraction form
    495.36/683.51 = 285.54/x
  3. Step 3: Cross multiply
    495.36x = 683.51 × 285.54
  4. Step 4: Simplify right side
    495.36x = 195,170.16
  5. Step 5: Solve for x
    x = 195,170.16/495.36
  6. Step 6: Final answer
    x = 394.00

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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.