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Finding the Fourth Proportional to 839.44, 1,158.56 and 524.68

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Solution

The fourth proportional to 839.44, 1,158.56 and 524.68 is: 724.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.44 : 1,158.56 = 524.68 : x
  2. Step 2: Convert to fraction form
    839.44/1,158.56 = 524.68/x
  3. Step 3: Cross multiply
    839.44x = 1,158.56 × 524.68
  4. Step 4: Simplify right side
    839.44x = 607,873.26
  5. Step 5: Solve for x
    x = 607,873.26/839.44
  6. Step 6: Final answer
    x = 724.14

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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.