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Finding the Fourth Proportional to 524.45, 723.75 and 303.40

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Solution

The fourth proportional to 524.45, 723.75 and 303.40 is: 418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.45 : 723.75 = 303.40 : x
  2. Step 2: Convert to fraction form
    524.45/723.75 = 303.40/x
  3. Step 3: Cross multiply
    524.45x = 723.75 × 303.40
  4. Step 4: Simplify right side
    524.45x = 219,585.75
  5. Step 5: Solve for x
    x = 219,585.75/524.45
  6. Step 6: Final answer
    x = 418.70

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1.5x scale

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.