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Finding the Fourth Proportional to 341.41, 511.72 and 155.90

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Solution

The fourth proportional to 341.41, 511.72 and 155.90 is: 233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.41 : 511.72 = 155.90 : x
  2. Step 2: Convert to fraction form
    341.41/511.72 = 155.90/x
  3. Step 3: Cross multiply
    341.41x = 511.72 × 155.90
  4. Step 4: Simplify right side
    341.41x = 79,774.20
  5. Step 5: Solve for x
    x = 79,774.20/341.41
  6. Step 6: Final answer
    x = 233.66

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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.