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Finding the Fourth Proportional to 564.84, 845.16 and 486.72

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Solution

The fourth proportional to 564.84, 845.16 and 486.72 is: 728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.84 : 845.16 = 486.72 : x
  2. Step 2: Convert to fraction form
    564.84/845.16 = 486.72/x
  3. Step 3: Cross multiply
    564.84x = 845.16 × 486.72
  4. Step 4: Simplify right side
    564.84x = 411,356.28
  5. Step 5: Solve for x
    x = 411,356.28/564.84
  6. Step 6: Final answer
    x = 728.27

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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.