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Finding the Fourth Proportional to 595.82, 821.37 and 455.63

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Solution

The fourth proportional to 595.82, 821.37 and 455.63 is: 628.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.82 : 821.37 = 455.63 : x
  2. Step 2: Convert to fraction form
    595.82/821.37 = 455.63/x
  3. Step 3: Cross multiply
    595.82x = 821.37 × 455.63
  4. Step 4: Simplify right side
    595.82x = 374,238.41
  5. Step 5: Solve for x
    x = 374,238.41/595.82
  6. Step 6: Final answer
    x = 628.10

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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.