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Finding the Fourth Proportional to 564.07, 847.32 and 477.58

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Solution

The fourth proportional to 564.07, 847.32 and 477.58 is: 717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.07 : 847.32 = 477.58 : x
  2. Step 2: Convert to fraction form
    564.07/847.32 = 477.58/x
  3. Step 3: Cross multiply
    564.07x = 847.32 × 477.58
  4. Step 4: Simplify right side
    564.07x = 404,658.85
  5. Step 5: Solve for x
    x = 404,658.85/564.07
  6. Step 6: Final answer
    x = 717.40

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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.