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Finding the Fourth Proportional to 595.19, 821.65 and 396.35

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Solution

The fourth proportional to 595.19, 821.65 and 396.35 is: 547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.19 : 821.65 = 396.35 : x
  2. Step 2: Convert to fraction form
    595.19/821.65 = 396.35/x
  3. Step 3: Cross multiply
    595.19x = 821.65 × 396.35
  4. Step 4: Simplify right side
    595.19x = 325,655.88
  5. Step 5: Solve for x
    x = 325,655.88/595.19
  6. Step 6: Final answer
    x = 547.15

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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.