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Finding the Fourth Proportional to 155.08, 233.77 and 147.16

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Solution

The fourth proportional to 155.08, 233.77 and 147.16 is: 221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.08 : 233.77 = 147.16 : x
  2. Step 2: Convert to fraction form
    155.08/233.77 = 147.16/x
  3. Step 3: Cross multiply
    155.08x = 233.77 × 147.16
  4. Step 4: Simplify right side
    155.08x = 34,401.59
  5. Step 5: Solve for x
    x = 34,401.59/155.08
  6. Step 6: Final answer
    x = 221.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.