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Finding the Fourth Proportional to 504.30, 755.84 and 260.69

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Solution

The fourth proportional to 504.30, 755.84 and 260.69 is: 390.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.30 : 755.84 = 260.69 : x
  2. Step 2: Convert to fraction form
    504.30/755.84 = 260.69/x
  3. Step 3: Cross multiply
    504.30x = 755.84 × 260.69
  4. Step 4: Simplify right side
    504.30x = 197,039.93
  5. Step 5: Solve for x
    x = 197,039.93/504.30
  6. Step 6: Final answer
    x = 390.72

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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.