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Finding the Fourth Proportional to 595.50, 821.16 and 470.96

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Solution

The fourth proportional to 595.50, 821.16 and 470.96 is: 649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.50 : 821.16 = 470.96 : x
  2. Step 2: Convert to fraction form
    595.50/821.16 = 470.96/x
  3. Step 3: Cross multiply
    595.50x = 821.16 × 470.96
  4. Step 4: Simplify right side
    595.50x = 386,729.41
  5. Step 5: Solve for x
    x = 386,729.41/595.50
  6. Step 6: Final answer
    x = 649.43

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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.