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Finding the Fourth Proportional to 495.98, 684.53 and 286.19

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Solution

The fourth proportional to 495.98, 684.53 and 286.19 is: 394.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.98 : 684.53 = 286.19 : x
  2. Step 2: Convert to fraction form
    495.98/684.53 = 286.19/x
  3. Step 3: Cross multiply
    495.98x = 684.53 × 286.19
  4. Step 4: Simplify right side
    495.98x = 195,905.64
  5. Step 5: Solve for x
    x = 195,905.64/495.98
  6. Step 6: Final answer
    x = 394.99

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.