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Finding the Fourth Proportional to 839.56, 1,158.58 and 507.94

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Solution

The fourth proportional to 839.56, 1,158.58 and 507.94 is: 700.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.56 : 1,158.58 = 507.94 : x
  2. Step 2: Convert to fraction form
    839.56/1,158.58 = 507.94/x
  3. Step 3: Cross multiply
    839.56x = 1,158.58 × 507.94
  4. Step 4: Simplify right side
    839.56x = 588,489.13
  5. Step 5: Solve for x
    x = 588,489.13/839.56
  6. Step 6: Final answer
    x = 700.95

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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.