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Finding the Fourth Proportional to 503.80, 755.31 and 260.17

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Solution

The fourth proportional to 503.80, 755.31 and 260.17 is: 390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.80 : 755.31 = 260.17 : x
  2. Step 2: Convert to fraction form
    503.80/755.31 = 260.17/x
  3. Step 3: Cross multiply
    503.80x = 755.31 × 260.17
  4. Step 4: Simplify right side
    503.80x = 196,508.09
  5. Step 5: Solve for x
    x = 196,508.09/503.80
  6. Step 6: Final answer
    x = 390.05

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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.