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Finding the Fourth Proportional to 215.53, 297.42 and 127.01

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Solution

The fourth proportional to 215.53, 297.42 and 127.01 is: 175.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.53 : 297.42 = 127.01 : x
  2. Step 2: Convert to fraction form
    215.53/297.42 = 127.01/x
  3. Step 3: Cross multiply
    215.53x = 297.42 × 127.01
  4. Step 4: Simplify right side
    215.53x = 37,775.46
  5. Step 5: Solve for x
    x = 37,775.46/215.53
  6. Step 6: Final answer
    x = 175.27

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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.