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Finding the Fourth Proportional to 839.94, 1,158.93 and 508.56

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Solution

The fourth proportional to 839.94, 1,158.93 and 508.56 is: 701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.94 : 1,158.93 = 508.56 : x
  2. Step 2: Convert to fraction form
    839.94/1,158.93 = 508.56/x
  3. Step 3: Cross multiply
    839.94x = 1,158.93 × 508.56
  4. Step 4: Simplify right side
    839.94x = 589,385.44
  5. Step 5: Solve for x
    x = 589,385.44/839.94
  6. Step 6: Final answer
    x = 701.70

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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.