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Finding the Fourth Proportional to 1,029.01, 1,544.14 and 412.63

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Solution

The fourth proportional to 1,029.01, 1,544.14 and 412.63 is: 619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.01 : 1,544.14 = 412.63 : x
  2. Step 2: Convert to fraction form
    1,029.01/1,544.14 = 412.63/x
  3. Step 3: Cross multiply
    1,029.01x = 1,544.14 × 412.63
  4. Step 4: Simplify right side
    1,029.01x = 637,158.49
  5. Step 5: Solve for x
    x = 637,158.49/1,029.01
  6. Step 6: Final answer
    x = 619.20

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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.