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Finding the Fourth Proportional to 587.83, 811.12 and 339.13

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Solution

The fourth proportional to 587.83, 811.12 and 339.13 is: 467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.83 : 811.12 = 339.13 : x
  2. Step 2: Convert to fraction form
    587.83/811.12 = 339.13/x
  3. Step 3: Cross multiply
    587.83x = 811.12 × 339.13
  4. Step 4: Simplify right side
    587.83x = 275,075.13
  5. Step 5: Solve for x
    x = 275,075.13/587.83
  6. Step 6: Final answer
    x = 467.95

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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.