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Finding the Fourth Proportional to 495.08, 681.81 and 493.60

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Solution

The fourth proportional to 495.08, 681.81 and 493.60 is: 679.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.08 : 681.81 = 493.60 : x
  2. Step 2: Convert to fraction form
    495.08/681.81 = 493.60/x
  3. Step 3: Cross multiply
    495.08x = 681.81 × 493.60
  4. Step 4: Simplify right side
    495.08x = 336,541.42
  5. Step 5: Solve for x
    x = 336,541.42/495.08
  6. Step 6: Final answer
    x = 679.77

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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.