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Finding the Fourth Proportional to 1,199.30, 1,655.10 and 675.36

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Solution

The fourth proportional to 1,199.30, 1,655.10 and 675.36 is: 932.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.30 : 1,655.10 = 675.36 : x
  2. Step 2: Convert to fraction form
    1,199.30/1,655.10 = 675.36/x
  3. Step 3: Cross multiply
    1,199.30x = 1,655.10 × 675.36
  4. Step 4: Simplify right side
    1,199.30x = 1,117,788.34
  5. Step 5: Solve for x
    x = 1,117,788.34/1,199.30
  6. Step 6: Final answer
    x = 932.04

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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.