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Finding the Fourth Proportional to 472.76, 652.36 and 286.28

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Solution

The fourth proportional to 472.76, 652.36 and 286.28 is: 395.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.76 : 652.36 = 286.28 : x
  2. Step 2: Convert to fraction form
    472.76/652.36 = 286.28/x
  3. Step 3: Cross multiply
    472.76x = 652.36 × 286.28
  4. Step 4: Simplify right side
    472.76x = 186,757.62
  5. Step 5: Solve for x
    x = 186,757.62/472.76
  6. Step 6: Final answer
    x = 395.04

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Find fourth proportional to 236.38, 326.18 and 143.14
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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.