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Finding the Fourth Proportional to 693.12, 956.52 and 496.56

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Solution

The fourth proportional to 693.12, 956.52 and 496.56 is: 685.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.12 : 956.52 = 496.56 : x
  2. Step 2: Convert to fraction form
    693.12/956.52 = 496.56/x
  3. Step 3: Cross multiply
    693.12x = 956.52 × 496.56
  4. Step 4: Simplify right side
    693.12x = 474,969.57
  5. Step 5: Solve for x
    x = 474,969.57/693.12
  6. Step 6: Final answer
    x = 685.26

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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.