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Finding the Fourth Proportional to 529.98, 793.80 and 486.96

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Solution

The fourth proportional to 529.98, 793.80 and 486.96 is: 729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.98 : 793.80 = 486.96 : x
  2. Step 2: Convert to fraction form
    529.98/793.80 = 486.96/x
  3. Step 3: Cross multiply
    529.98x = 793.80 × 486.96
  4. Step 4: Simplify right side
    529.98x = 386,548.85
  5. Step 5: Solve for x
    x = 386,548.85/529.98
  6. Step 6: Final answer
    x = 729.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.