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Finding the Fourth Proportional to 471.66, 707.65 and 243.50

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Solution

The fourth proportional to 471.66, 707.65 and 243.50 is: 365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.66 : 707.65 = 243.50 : x
  2. Step 2: Convert to fraction form
    471.66/707.65 = 243.50/x
  3. Step 3: Cross multiply
    471.66x = 707.65 × 243.50
  4. Step 4: Simplify right side
    471.66x = 172,312.78
  5. Step 5: Solve for x
    x = 172,312.78/471.66
  6. Step 6: Final answer
    x = 365.33

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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.