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Finding the Fourth Proportional to 501.15, 752.67 and 393.69

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Solution

The fourth proportional to 501.15, 752.67 and 393.69 is: 591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.15 : 752.67 = 393.69 : x
  2. Step 2: Convert to fraction form
    501.15/752.67 = 393.69/x
  3. Step 3: Cross multiply
    501.15x = 752.67 × 393.69
  4. Step 4: Simplify right side
    501.15x = 296,318.65
  5. Step 5: Solve for x
    x = 296,318.65/501.15
  6. Step 6: Final answer
    x = 591.28

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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.