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Finding the Fourth Proportional to 469.89, 705.17 and 181.32

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Solution

The fourth proportional to 469.89, 705.17 and 181.32 is: 272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.89 : 705.17 = 181.32 : x
  2. Step 2: Convert to fraction form
    469.89/705.17 = 181.32/x
  3. Step 3: Cross multiply
    469.89x = 705.17 × 181.32
  4. Step 4: Simplify right side
    469.89x = 127,860.52
  5. Step 5: Solve for x
    x = 127,860.52/469.89
  6. Step 6: Final answer
    x = 272.11

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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.