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Finding the Fourth Proportional to 854.88, 1,179.36 and 606.72

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Solution

The fourth proportional to 854.88, 1,179.36 and 606.72 is: 837.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.88 : 1,179.36 = 606.72 : x
  2. Step 2: Convert to fraction form
    854.88/1,179.36 = 606.72/x
  3. Step 3: Cross multiply
    854.88x = 1,179.36 × 606.72
  4. Step 4: Simplify right side
    854.88x = 715,541.30
  5. Step 5: Solve for x
    x = 715,541.30/854.88
  6. Step 6: Final answer
    x = 837.01

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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.