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Finding the Fourth Proportional to 818.92, 1,129.98 and 598.12

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Solution

The fourth proportional to 818.92, 1,129.98 and 598.12 is: 825.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.92 : 1,129.98 = 598.12 : x
  2. Step 2: Convert to fraction form
    818.92/1,129.98 = 598.12/x
  3. Step 3: Cross multiply
    818.92x = 1,129.98 × 598.12
  4. Step 4: Simplify right side
    818.92x = 675,863.64
  5. Step 5: Solve for x
    x = 675,863.64/818.92
  6. Step 6: Final answer
    x = 825.31

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Double scale
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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.