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Finding the Fourth Proportional to 155.01, 232.30 and 90.93

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Solution

The fourth proportional to 155.01, 232.30 and 90.93 is: 136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.01 : 232.30 = 90.93 : x
  2. Step 2: Convert to fraction form
    155.01/232.30 = 90.93/x
  3. Step 3: Cross multiply
    155.01x = 232.30 × 90.93
  4. Step 4: Simplify right side
    155.01x = 21,123.04
  5. Step 5: Solve for x
    x = 21,123.04/155.01
  6. Step 6: Final answer
    x = 136.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.