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Finding the Fourth Proportional to 525.03, 724.45 and 303.91

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Solution

The fourth proportional to 525.03, 724.45 and 303.91 is: 419.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.03 : 724.45 = 303.91 : x
  2. Step 2: Convert to fraction form
    525.03/724.45 = 303.91/x
  3. Step 3: Cross multiply
    525.03x = 724.45 × 303.91
  4. Step 4: Simplify right side
    525.03x = 220,167.60
  5. Step 5: Solve for x
    x = 220,167.60/525.03
  6. Step 6: Final answer
    x = 419.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.