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Finding the Fourth Proportional to 1,624.31, 2,436.71 and 513.35

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Solution

The fourth proportional to 1,624.31, 2,436.71 and 513.35 is: 770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.31 : 2,436.71 = 513.35 : x
  2. Step 2: Convert to fraction form
    1,624.31/2,436.71 = 513.35/x
  3. Step 3: Cross multiply
    1,624.31x = 2,436.71 × 513.35
  4. Step 4: Simplify right side
    1,624.31x = 1,250,879.47
  5. Step 5: Solve for x
    x = 1,250,879.47/1,624.31
  6. Step 6: Final answer
    x = 770.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.