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Finding the Fourth Proportional to 864.03, 1,295.22 and 286.50

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Solution

The fourth proportional to 864.03, 1,295.22 and 286.50 is: 429.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.03 : 1,295.22 = 286.50 : x
  2. Step 2: Convert to fraction form
    864.03/1,295.22 = 286.50/x
  3. Step 3: Cross multiply
    864.03x = 1,295.22 × 286.50
  4. Step 4: Simplify right side
    864.03x = 371,080.53
  5. Step 5: Solve for x
    x = 371,080.53/864.03
  6. Step 6: Final answer
    x = 429.48

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.