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Finding the Fourth Proportional to 693.38, 957.32 and 535.74

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Solution

The fourth proportional to 693.38, 957.32 and 535.74 is: 739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.38 : 957.32 = 535.74 : x
  2. Step 2: Convert to fraction form
    693.38/957.32 = 535.74/x
  3. Step 3: Cross multiply
    693.38x = 957.32 × 535.74
  4. Step 4: Simplify right side
    693.38x = 512,874.62
  5. Step 5: Solve for x
    x = 512,874.62/693.38
  6. Step 6: Final answer
    x = 739.67

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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.