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Finding the Fourth Proportional to 501.96, 753.20 and 258.96

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Solution

The fourth proportional to 501.96, 753.20 and 258.96 is: 388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.96 : 753.20 = 258.96 : x
  2. Step 2: Convert to fraction form
    501.96/753.20 = 258.96/x
  3. Step 3: Cross multiply
    501.96x = 753.20 × 258.96
  4. Step 4: Simplify right side
    501.96x = 195,048.67
  5. Step 5: Solve for x
    x = 195,048.67/501.96
  6. Step 6: Final answer
    x = 388.57

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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.