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Finding the Fourth Proportional to 595.88, 821.78 and 469.92

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Solution

The fourth proportional to 595.88, 821.78 and 469.92 is: 648.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.88 : 821.78 = 469.92 : x
  2. Step 2: Convert to fraction form
    595.88/821.78 = 469.92/x
  3. Step 3: Cross multiply
    595.88x = 821.78 × 469.92
  4. Step 4: Simplify right side
    595.88x = 386,170.86
  5. Step 5: Solve for x
    x = 386,170.86/595.88
  6. Step 6: Final answer
    x = 648.07

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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.