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Finding the Fourth Proportional to 259.37, 358.01 and 155.87

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Solution

The fourth proportional to 259.37, 358.01 and 155.87 is: 215.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.37 : 358.01 = 155.87 : x
  2. Step 2: Convert to fraction form
    259.37/358.01 = 155.87/x
  3. Step 3: Cross multiply
    259.37x = 358.01 × 155.87
  4. Step 4: Simplify right side
    259.37x = 55,800.45
  5. Step 5: Solve for x
    x = 55,800.45/259.37
  6. Step 6: Final answer
    x = 215.14

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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.