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Finding the Fourth Proportional to 839.83, 1,158.77 and 508.36

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Solution

The fourth proportional to 839.83, 1,158.77 and 508.36 is: 701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.83 : 1,158.77 = 508.36 : x
  2. Step 2: Convert to fraction form
    839.83/1,158.77 = 508.36/x
  3. Step 3: Cross multiply
    839.83x = 1,158.77 × 508.36
  4. Step 4: Simplify right side
    839.83x = 589,075.61
  5. Step 5: Solve for x
    x = 589,075.61/839.83
  6. Step 6: Final answer
    x = 701.42

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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.