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Finding the Fourth Proportional to 693.32, 955.47 and 496.49

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Solution

The fourth proportional to 693.32, 955.47 and 496.49 is: 684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.32 : 955.47 = 496.49 : x
  2. Step 2: Convert to fraction form
    693.32/955.47 = 496.49/x
  3. Step 3: Cross multiply
    693.32x = 955.47 × 496.49
  4. Step 4: Simplify right side
    693.32x = 474,378.82
  5. Step 5: Solve for x
    x = 474,378.82/693.32
  6. Step 6: Final answer
    x = 684.21

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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.