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Finding the Fourth Proportional to 1,384.49, 2,075.49 and 506.38

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Solution

The fourth proportional to 1,384.49, 2,075.49 and 506.38 is: 759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.49 : 2,075.49 = 506.38 : x
  2. Step 2: Convert to fraction form
    1,384.49/2,075.49 = 506.38/x
  3. Step 3: Cross multiply
    1,384.49x = 2,075.49 × 506.38
  4. Step 4: Simplify right side
    1,384.49x = 1,050,985.33
  5. Step 5: Solve for x
    x = 1,050,985.33/1,384.49
  6. Step 6: Final answer
    x = 759.11

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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.