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Finding the Fourth Proportional to 503.62, 755.02 and 260.02

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Solution

The fourth proportional to 503.62, 755.02 and 260.02 is: 389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.62 : 755.02 = 260.02 : x
  2. Step 2: Convert to fraction form
    503.62/755.02 = 260.02/x
  3. Step 3: Cross multiply
    503.62x = 755.02 × 260.02
  4. Step 4: Simplify right side
    503.62x = 196,320.30
  5. Step 5: Solve for x
    x = 196,320.30/503.62
  6. Step 6: Final answer
    x = 389.82

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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.