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Finding the Fourth Proportional to 694.69, 957.36 and 497.86

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Solution

The fourth proportional to 694.69, 957.36 and 497.86 is: 686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.69 : 957.36 = 497.86 : x
  2. Step 2: Convert to fraction form
    694.69/957.36 = 497.86/x
  3. Step 3: Cross multiply
    694.69x = 957.36 × 497.86
  4. Step 4: Simplify right side
    694.69x = 476,631.25
  5. Step 5: Solve for x
    x = 476,631.25/694.69
  6. Step 6: Final answer
    x = 686.11

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Double scale
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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.