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Finding the Fourth Proportional to 650.66, 897.90 and 355.91

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Solution

The fourth proportional to 650.66, 897.90 and 355.91 is: 491.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.66 : 897.90 = 355.91 : x
  2. Step 2: Convert to fraction form
    650.66/897.90 = 355.91/x
  3. Step 3: Cross multiply
    650.66x = 897.90 × 355.91
  4. Step 4: Simplify right side
    650.66x = 319,567.10
  5. Step 5: Solve for x
    x = 319,567.10/650.66
  6. Step 6: Final answer
    x = 491.15

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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.