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Finding the Fourth Proportional to 854.37, 1,179.08 and 476.36

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Solution

The fourth proportional to 854.37, 1,179.08 and 476.36 is: 657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.37 : 1,179.08 = 476.36 : x
  2. Step 2: Convert to fraction form
    854.37/1,179.08 = 476.36/x
  3. Step 3: Cross multiply
    854.37x = 1,179.08 × 476.36
  4. Step 4: Simplify right side
    854.37x = 561,664.48
  5. Step 5: Solve for x
    x = 561,664.48/854.37
  6. Step 6: Final answer
    x = 657.40

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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.