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Finding the Fourth Proportional to 693.69, 957.45 and 623.62

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Solution

The fourth proportional to 693.69, 957.45 and 623.62 is: 860.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.69 : 957.45 = 623.62 : x
  2. Step 2: Convert to fraction form
    693.69/957.45 = 623.62/x
  3. Step 3: Cross multiply
    693.69x = 957.45 × 623.62
  4. Step 4: Simplify right side
    693.69x = 597,084.97
  5. Step 5: Solve for x
    x = 597,084.97/693.69
  6. Step 6: Final answer
    x = 860.74

Related Problems

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Half scale
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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.