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Finding the Fourth Proportional to 155.30, 214.61 and 150.17

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Solution

The fourth proportional to 155.30, 214.61 and 150.17 is: 207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.30 : 214.61 = 150.17 : x
  2. Step 2: Convert to fraction form
    155.30/214.61 = 150.17/x
  3. Step 3: Cross multiply
    155.30x = 214.61 × 150.17
  4. Step 4: Simplify right side
    155.30x = 32,226.16
  5. Step 5: Solve for x
    x = 32,226.16/155.30
  6. Step 6: Final answer
    x = 207.52

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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.