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Finding the Fourth Proportional to 865.08, 1,194.35 and 654.89

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Solution

The fourth proportional to 865.08, 1,194.35 and 654.89 is: 904.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.08 : 1,194.35 = 654.89 : x
  2. Step 2: Convert to fraction form
    865.08/1,194.35 = 654.89/x
  3. Step 3: Cross multiply
    865.08x = 1,194.35 × 654.89
  4. Step 4: Simplify right side
    865.08x = 782,158.63
  5. Step 5: Solve for x
    x = 782,158.63/865.08
  6. Step 6: Final answer
    x = 904.15

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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.