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Finding the Fourth Proportional to 259.42, 358.20 and 203.59

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Solution

The fourth proportional to 259.42, 358.20 and 203.59 is: 281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.42 : 358.20 = 203.59 : x
  2. Step 2: Convert to fraction form
    259.42/358.20 = 203.59/x
  3. Step 3: Cross multiply
    259.42x = 358.20 × 203.59
  4. Step 4: Simplify right side
    259.42x = 72,925.94
  5. Step 5: Solve for x
    x = 72,925.94/259.42
  6. Step 6: Final answer
    x = 281.11

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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.