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Finding the Fourth Proportional to 155.29, 214.16 and 127.50

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Solution

The fourth proportional to 155.29, 214.16 and 127.50 is: 175.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.29 : 214.16 = 127.50 : x
  2. Step 2: Convert to fraction form
    155.29/214.16 = 127.50/x
  3. Step 3: Cross multiply
    155.29x = 214.16 × 127.50
  4. Step 4: Simplify right side
    155.29x = 27,305.34
  5. Step 5: Solve for x
    x = 27,305.34/155.29
  6. Step 6: Final answer
    x = 175.83

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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.