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Finding the Fourth Proportional to 624.36, 935.70 and 451.34

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Solution

The fourth proportional to 624.36, 935.70 and 451.34 is: 676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.36 : 935.70 = 451.34 : x
  2. Step 2: Convert to fraction form
    624.36/935.70 = 451.34/x
  3. Step 3: Cross multiply
    624.36x = 935.70 × 451.34
  4. Step 4: Simplify right side
    624.36x = 422,318.51
  5. Step 5: Solve for x
    x = 422,318.51/624.36
  6. Step 6: Final answer
    x = 676.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.