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Finding the Fourth Proportional to 693.16, 1,039.74 and 231.00

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Solution

The fourth proportional to 693.16, 1,039.74 and 231.00 is: 346.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.16 : 1,039.74 = 231.00 : x
  2. Step 2: Convert to fraction form
    693.16/1,039.74 = 231.00/x
  3. Step 3: Cross multiply
    693.16x = 1,039.74 × 231.00
  4. Step 4: Simplify right side
    693.16x = 240,181.02
  5. Step 5: Solve for x
    x = 240,181.02/693.16
  6. Step 6: Final answer
    x = 346.50

Related Problems

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.