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Finding the Fourth Proportional to 351.35, 526.65 and 145.97

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Solution

The fourth proportional to 351.35, 526.65 and 145.97 is: 218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.35 : 526.65 = 145.97 : x
  2. Step 2: Convert to fraction form
    351.35/526.65 = 145.97/x
  3. Step 3: Cross multiply
    351.35x = 526.65 × 145.97
  4. Step 4: Simplify right side
    351.35x = 76,875.10
  5. Step 5: Solve for x
    x = 76,875.10/351.35
  6. Step 6: Final answer
    x = 218.80

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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.