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Finding the Fourth Proportional to 668.92, 923.93 and 473.31

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Solution

The fourth proportional to 668.92, 923.93 and 473.31 is: 653.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.92 : 923.93 = 473.31 : x
  2. Step 2: Convert to fraction form
    668.92/923.93 = 473.31/x
  3. Step 3: Cross multiply
    668.92x = 923.93 × 473.31
  4. Step 4: Simplify right side
    668.92x = 437,305.31
  5. Step 5: Solve for x
    x = 437,305.31/668.92
  6. Step 6: Final answer
    x = 653.75

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.