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Finding the Fourth Proportional to 595.80, 822.12 and 386.16

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Solution

The fourth proportional to 595.80, 822.12 and 386.16 is: 532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.80 : 822.12 = 386.16 : x
  2. Step 2: Convert to fraction form
    595.80/822.12 = 386.16/x
  3. Step 3: Cross multiply
    595.80x = 822.12 × 386.16
  4. Step 4: Simplify right side
    595.80x = 317,469.86
  5. Step 5: Solve for x
    x = 317,469.86/595.80
  6. Step 6: Final answer
    x = 532.85

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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.