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Finding the Fourth Proportional to 513.64, 710.34 and 451.40

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Solution

The fourth proportional to 513.64, 710.34 and 451.40 is: 624.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.64 : 710.34 = 451.40 : x
  2. Step 2: Convert to fraction form
    513.64/710.34 = 451.40/x
  3. Step 3: Cross multiply
    513.64x = 710.34 × 451.40
  4. Step 4: Simplify right side
    513.64x = 320,647.48
  5. Step 5: Solve for x
    x = 320,647.48/513.64
  6. Step 6: Final answer
    x = 624.27

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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.