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Finding the Fourth Proportional to 1,199.56, 1,655.28 and 675.64

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Solution

The fourth proportional to 1,199.56, 1,655.28 and 675.64 is: 932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.56 : 1,655.28 = 675.64 : x
  2. Step 2: Convert to fraction form
    1,199.56/1,655.28 = 675.64/x
  3. Step 3: Cross multiply
    1,199.56x = 1,655.28 × 675.64
  4. Step 4: Simplify right side
    1,199.56x = 1,118,373.38
  5. Step 5: Solve for x
    x = 1,118,373.38/1,199.56
  6. Step 6: Final answer
    x = 932.32

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1.5x scale

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.