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Finding the Fourth Proportional to 501.68, 752.56 and 213.36

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Solution

The fourth proportional to 501.68, 752.56 and 213.36 is: 320.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.68 : 752.56 = 213.36 : x
  2. Step 2: Convert to fraction form
    501.68/752.56 = 213.36/x
  3. Step 3: Cross multiply
    501.68x = 752.56 × 213.36
  4. Step 4: Simplify right side
    501.68x = 160,566.20
  5. Step 5: Solve for x
    x = 160,566.20/501.68
  6. Step 6: Final answer
    x = 320.06

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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.