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Finding the Fourth Proportional to 351.25, 526.88 and 145.93

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Solution

The fourth proportional to 351.25, 526.88 and 145.93 is: 218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.25 : 526.88 = 145.93 : x
  2. Step 2: Convert to fraction form
    351.25/526.88 = 145.93/x
  3. Step 3: Cross multiply
    351.25x = 526.88 × 145.93
  4. Step 4: Simplify right side
    351.25x = 76,887.60
  5. Step 5: Solve for x
    x = 76,887.60/351.25
  6. Step 6: Final answer
    x = 218.90

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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.