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Finding the Fourth Proportional to 693.72, 957.49 and 473.20

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Solution

The fourth proportional to 693.72, 957.49 and 473.20 is: 653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.72 : 957.49 = 473.20 : x
  2. Step 2: Convert to fraction form
    693.72/957.49 = 473.20/x
  3. Step 3: Cross multiply
    693.72x = 957.49 × 473.20
  4. Step 4: Simplify right side
    693.72x = 453,084.27
  5. Step 5: Solve for x
    x = 453,084.27/693.72
  6. Step 6: Final answer
    x = 653.12

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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.