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Finding the Fourth Proportional to 260.32, 390.84 and 175.36

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Solution

The fourth proportional to 260.32, 390.84 and 175.36 is: 263.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.32 : 390.84 = 175.36 : x
  2. Step 2: Convert to fraction form
    260.32/390.84 = 175.36/x
  3. Step 3: Cross multiply
    260.32x = 390.84 × 175.36
  4. Step 4: Simplify right side
    260.32x = 68,537.70
  5. Step 5: Solve for x
    x = 68,537.70/260.32
  6. Step 6: Final answer
    x = 263.28

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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.