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Finding the Fourth Proportional to 583.80, 803.26 and 478.50

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Solution

The fourth proportional to 583.80, 803.26 and 478.50 is: 658.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.80 : 803.26 = 478.50 : x
  2. Step 2: Convert to fraction form
    583.80/803.26 = 478.50/x
  3. Step 3: Cross multiply
    583.80x = 803.26 × 478.50
  4. Step 4: Simplify right side
    583.80x = 384,359.91
  5. Step 5: Solve for x
    x = 384,359.91/583.80
  6. Step 6: Final answer
    x = 658.38

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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.