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Finding the Fourth Proportional to 157.20, 216.48 and 110.52

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Solution

The fourth proportional to 157.20, 216.48 and 110.52 is: 152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.20 : 216.48 = 110.52 : x
  2. Step 2: Convert to fraction form
    157.20/216.48 = 110.52/x
  3. Step 3: Cross multiply
    157.20x = 216.48 × 110.52
  4. Step 4: Simplify right side
    157.20x = 23,925.37
  5. Step 5: Solve for x
    x = 23,925.37/157.20
  6. Step 6: Final answer
    x = 152.20

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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.