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Finding the Fourth Proportional to 470.13, 705.62 and 181.77

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Solution

The fourth proportional to 470.13, 705.62 and 181.77 is: 272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.13 : 705.62 = 181.77 : x
  2. Step 2: Convert to fraction form
    470.13/705.62 = 181.77/x
  3. Step 3: Cross multiply
    470.13x = 705.62 × 181.77
  4. Step 4: Simplify right side
    470.13x = 128,259.64
  5. Step 5: Solve for x
    x = 128,259.64/470.13
  6. Step 6: Final answer
    x = 272.82

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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.