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Finding the Fourth Proportional to 524.75, 724.07 and 303.75

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Solution

The fourth proportional to 524.75, 724.07 and 303.75 is: 419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.75 : 724.07 = 303.75 : x
  2. Step 2: Convert to fraction form
    524.75/724.07 = 303.75/x
  3. Step 3: Cross multiply
    524.75x = 724.07 × 303.75
  4. Step 4: Simplify right side
    524.75x = 219,937.02
  5. Step 5: Solve for x
    x = 219,937.02/524.75
  6. Step 6: Final answer
    x = 419.13

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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.