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Finding the Fourth Proportional to 650.61, 897.81 and 355.88

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Solution

The fourth proportional to 650.61, 897.81 and 355.88 is: 491.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.61 : 897.81 = 355.88 : x
  2. Step 2: Convert to fraction form
    650.61/897.81 = 355.88/x
  3. Step 3: Cross multiply
    650.61x = 897.81 × 355.88
  4. Step 4: Simplify right side
    650.61x = 319,508.13
  5. Step 5: Solve for x
    x = 319,508.13/650.61
  6. Step 6: Final answer
    x = 491.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.