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Finding the Fourth Proportional to 595.43, 821.41 and 385.67

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Solution

The fourth proportional to 595.43, 821.41 and 385.67 is: 532.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.43 : 821.41 = 385.67 : x
  2. Step 2: Convert to fraction form
    595.43/821.41 = 385.67/x
  3. Step 3: Cross multiply
    595.43x = 821.41 × 385.67
  4. Step 4: Simplify right side
    595.43x = 316,795.43
  5. Step 5: Solve for x
    x = 316,795.43/595.43
  6. Step 6: Final answer
    x = 532.05

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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.