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Finding the Fourth Proportional to 693.98, 956.37 and 497.15

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Solution

The fourth proportional to 693.98, 956.37 and 497.15 is: 685.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.98 : 956.37 = 497.15 : x
  2. Step 2: Convert to fraction form
    693.98/956.37 = 497.15/x
  3. Step 3: Cross multiply
    693.98x = 956.37 × 497.15
  4. Step 4: Simplify right side
    693.98x = 475,458.20
  5. Step 5: Solve for x
    x = 475,458.20/693.98
  6. Step 6: Final answer
    x = 685.12

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Double scale
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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.