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Finding the Fourth Proportional to 351.08, 526.62 and 145.66

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Solution

The fourth proportional to 351.08, 526.62 and 145.66 is: 218.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.08 : 526.62 = 145.66 : x
  2. Step 2: Convert to fraction form
    351.08/526.62 = 145.66/x
  3. Step 3: Cross multiply
    351.08x = 526.62 × 145.66
  4. Step 4: Simplify right side
    351.08x = 76,707.47
  5. Step 5: Solve for x
    x = 76,707.47/351.08
  6. Step 6: Final answer
    x = 218.49

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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.