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Finding the Fourth Proportional to 503.74, 754.98 and 260.20

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Solution

The fourth proportional to 503.74, 754.98 and 260.20 is: 389.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.74 : 754.98 = 260.20 : x
  2. Step 2: Convert to fraction form
    503.74/754.98 = 260.20/x
  3. Step 3: Cross multiply
    503.74x = 754.98 × 260.20
  4. Step 4: Simplify right side
    503.74x = 196,445.80
  5. Step 5: Solve for x
    x = 196,445.80/503.74
  6. Step 6: Final answer
    x = 389.97

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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.