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Finding the Fourth Proportional to 1,029.07, 1,543.54 and 451.75

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Solution

The fourth proportional to 1,029.07, 1,543.54 and 451.75 is: 677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.07 : 1,543.54 = 451.75 : x
  2. Step 2: Convert to fraction form
    1,029.07/1,543.54 = 451.75/x
  3. Step 3: Cross multiply
    1,029.07x = 1,543.54 × 451.75
  4. Step 4: Simplify right side
    1,029.07x = 697,294.20
  5. Step 5: Solve for x
    x = 697,294.20/1,029.07
  6. Step 6: Final answer
    x = 677.60

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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.