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Finding the Fourth Proportional to 259.75, 358.54 and 160.20

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Solution

The fourth proportional to 259.75, 358.54 and 160.20 is: 221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.75 : 358.54 = 160.20 : x
  2. Step 2: Convert to fraction form
    259.75/358.54 = 160.20/x
  3. Step 3: Cross multiply
    259.75x = 358.54 × 160.20
  4. Step 4: Simplify right side
    259.75x = 57,437.71
  5. Step 5: Solve for x
    x = 57,437.71/259.75
  6. Step 6: Final answer
    x = 221.13

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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.