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Finding the Fourth Proportional to 818.85, 1,130.13 and 524.97

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Solution

The fourth proportional to 818.85, 1,130.13 and 524.97 is: 724.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.85 : 1,130.13 = 524.97 : x
  2. Step 2: Convert to fraction form
    818.85/1,130.13 = 524.97/x
  3. Step 3: Cross multiply
    818.85x = 1,130.13 × 524.97
  4. Step 4: Simplify right side
    818.85x = 593,284.35
  5. Step 5: Solve for x
    x = 593,284.35/818.85
  6. Step 6: Final answer
    x = 724.53

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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.