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Finding the Fourth Proportional to 865.79, 1,194.83 and 472.81

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Solution

The fourth proportional to 865.79, 1,194.83 and 472.81 is: 652.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.79 : 1,194.83 = 472.81 : x
  2. Step 2: Convert to fraction form
    865.79/1,194.83 = 472.81/x
  3. Step 3: Cross multiply
    865.79x = 1,194.83 × 472.81
  4. Step 4: Simplify right side
    865.79x = 564,931.74
  5. Step 5: Solve for x
    x = 564,931.74/865.79
  6. Step 6: Final answer
    x = 652.51

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Double scale
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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.