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Finding the Fourth Proportional to 700.31, 966.64 and 451.63

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Solution

The fourth proportional to 700.31, 966.64 and 451.63 is: 623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.31 : 966.64 = 451.63 : x
  2. Step 2: Convert to fraction form
    700.31/966.64 = 451.63/x
  3. Step 3: Cross multiply
    700.31x = 966.64 × 451.63
  4. Step 4: Simplify right side
    700.31x = 436,558.79
  5. Step 5: Solve for x
    x = 436,558.79/700.31
  6. Step 6: Final answer
    x = 623.38

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.