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Finding the Fourth Proportional to 822.14, 1,134.65 and 472.82

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Solution

The fourth proportional to 822.14, 1,134.65 and 472.82 is: 652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.14 : 1,134.65 = 472.82 : x
  2. Step 2: Convert to fraction form
    822.14/1,134.65 = 472.82/x
  3. Step 3: Cross multiply
    822.14x = 1,134.65 × 472.82
  4. Step 4: Simplify right side
    822.14x = 536,477.18
  5. Step 5: Solve for x
    x = 536,477.18/822.14
  6. Step 6: Final answer
    x = 652.54

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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.