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Finding the Fourth Proportional to 595.36, 821.79 and 385.93

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Solution

The fourth proportional to 595.36, 821.79 and 385.93 is: 532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.36 : 821.79 = 385.93 : x
  2. Step 2: Convert to fraction form
    595.36/821.79 = 385.93/x
  3. Step 3: Cross multiply
    595.36x = 821.79 × 385.93
  4. Step 4: Simplify right side
    595.36x = 317,153.41
  5. Step 5: Solve for x
    x = 317,153.41/595.36
  6. Step 6: Final answer
    x = 532.71

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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.