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Finding the Fourth Proportional to 595.28, 821.19 and 385.63

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Solution

The fourth proportional to 595.28, 821.19 and 385.63 is: 531.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.28 : 821.19 = 385.63 : x
  2. Step 2: Convert to fraction form
    595.28/821.19 = 385.63/x
  3. Step 3: Cross multiply
    595.28x = 821.19 × 385.63
  4. Step 4: Simplify right side
    595.28x = 316,675.50
  5. Step 5: Solve for x
    x = 316,675.50/595.28
  6. Step 6: Final answer
    x = 531.98

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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.