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Finding the Fourth Proportional to 1,254.04, 1,730.04 and 811.99

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Solution

The fourth proportional to 1,254.04, 1,730.04 and 811.99 is: 1,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.04 : 1,730.04 = 811.99 : x
  2. Step 2: Convert to fraction form
    1,254.04/1,730.04 = 811.99/x
  3. Step 3: Cross multiply
    1,254.04x = 1,730.04 × 811.99
  4. Step 4: Simplify right side
    1,254.04x = 1,404,775.18
  5. Step 5: Solve for x
    x = 1,404,775.18/1,254.04
  6. Step 6: Final answer
    x = 1,120.20

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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.