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Finding the Fourth Proportional to 650.61, 975.24 and 260.61

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Solution

The fourth proportional to 650.61, 975.24 and 260.61 is: 390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.61 : 975.24 = 260.61 : x
  2. Step 2: Convert to fraction form
    650.61/975.24 = 260.61/x
  3. Step 3: Cross multiply
    650.61x = 975.24 × 260.61
  4. Step 4: Simplify right side
    650.61x = 254,157.30
  5. Step 5: Solve for x
    x = 254,157.30/650.61
  6. Step 6: Final answer
    x = 390.64

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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.