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Finding the Fourth Proportional to 158.01, 216.75 and 156.57

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Solution

The fourth proportional to 158.01, 216.75 and 156.57 is: 214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.01 : 216.75 = 156.57 : x
  2. Step 2: Convert to fraction form
    158.01/216.75 = 156.57/x
  3. Step 3: Cross multiply
    158.01x = 216.75 × 156.57
  4. Step 4: Simplify right side
    158.01x = 33,936.55
  5. Step 5: Solve for x
    x = 33,936.55/158.01
  6. Step 6: Final answer
    x = 214.77

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.