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Finding the Fourth Proportional to 818.04, 1,128.60 and 523.44

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Solution

The fourth proportional to 818.04, 1,128.60 and 523.44 is: 722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.04 : 1,128.60 = 523.44 : x
  2. Step 2: Convert to fraction form
    818.04/1,128.60 = 523.44/x
  3. Step 3: Cross multiply
    818.04x = 1,128.60 × 523.44
  4. Step 4: Simplify right side
    818.04x = 590,754.38
  5. Step 5: Solve for x
    x = 590,754.38/818.04
  6. Step 6: Final answer
    x = 722.16

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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.