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Finding the Fourth Proportional to 985.95, 1,360.26 and 593.10

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Solution

The fourth proportional to 985.95, 1,360.26 and 593.10 is: 818.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    985.95 : 1,360.26 = 593.10 : x
  2. Step 2: Convert to fraction form
    985.95/1,360.26 = 593.10/x
  3. Step 3: Cross multiply
    985.95x = 1,360.26 × 593.10
  4. Step 4: Simplify right side
    985.95x = 806,770.21
  5. Step 5: Solve for x
    x = 806,770.21/985.95
  6. Step 6: Final answer
    x = 818.27

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Double scale
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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.