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Finding the Fourth Proportional to 495.53, 684.18 and 442.92

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Solution

The fourth proportional to 495.53, 684.18 and 442.92 is: 611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.53 : 684.18 = 442.92 : x
  2. Step 2: Convert to fraction form
    495.53/684.18 = 442.92/x
  3. Step 3: Cross multiply
    495.53x = 684.18 × 442.92
  4. Step 4: Simplify right side
    495.53x = 303,035.72
  5. Step 5: Solve for x
    x = 303,035.72/495.53
  6. Step 6: Final answer
    x = 611.53

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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.