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Finding the Fourth Proportional to 564.40, 845.16 and 306.64

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Solution

The fourth proportional to 564.40, 845.16 and 306.64 is: 459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.40 : 845.16 = 306.64 : x
  2. Step 2: Convert to fraction form
    564.40/845.16 = 306.64/x
  3. Step 3: Cross multiply
    564.40x = 845.16 × 306.64
  4. Step 4: Simplify right side
    564.40x = 259,159.86
  5. Step 5: Solve for x
    x = 259,159.86/564.40
  6. Step 6: Final answer
    x = 459.18

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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.