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Finding the Fourth Proportional to 724.08, 1,085.35 and 377.07

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Solution

The fourth proportional to 724.08, 1,085.35 and 377.07 is: 565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.08 : 1,085.35 = 377.07 : x
  2. Step 2: Convert to fraction form
    724.08/1,085.35 = 377.07/x
  3. Step 3: Cross multiply
    724.08x = 1,085.35 × 377.07
  4. Step 4: Simplify right side
    724.08x = 409,252.92
  5. Step 5: Solve for x
    x = 409,252.92/724.08
  6. Step 6: Final answer
    x = 565.20

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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.