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Finding the Fourth Proportional to 501.39, 751.95 and 193.20

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Solution

The fourth proportional to 501.39, 751.95 and 193.20 is: 289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.39 : 751.95 = 193.20 : x
  2. Step 2: Convert to fraction form
    501.39/751.95 = 193.20/x
  3. Step 3: Cross multiply
    501.39x = 751.95 × 193.20
  4. Step 4: Simplify right side
    501.39x = 145,276.74
  5. Step 5: Solve for x
    x = 145,276.74/501.39
  6. Step 6: Final answer
    x = 289.75

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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.