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Finding the Fourth Proportional to 501.72, 752.58 and 136.53

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Solution

The fourth proportional to 501.72, 752.58 and 136.53 is: 204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.72 : 752.58 = 136.53 : x
  2. Step 2: Convert to fraction form
    501.72/752.58 = 136.53/x
  3. Step 3: Cross multiply
    501.72x = 752.58 × 136.53
  4. Step 4: Simplify right side
    501.72x = 102,749.75
  5. Step 5: Solve for x
    x = 102,749.75/501.72
  6. Step 6: Final answer
    x = 204.80

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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.