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Finding the Fourth Proportional to 595.42, 821.29 and 359.21

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Solution

The fourth proportional to 595.42, 821.29 and 359.21 is: 495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.42 : 821.29 = 359.21 : x
  2. Step 2: Convert to fraction form
    595.42/821.29 = 359.21/x
  3. Step 3: Cross multiply
    595.42x = 821.29 × 359.21
  4. Step 4: Simplify right side
    595.42x = 295,013.78
  5. Step 5: Solve for x
    x = 295,013.78/595.42
  6. Step 6: Final answer
    x = 495.47

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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.