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Finding the Fourth Proportional to 470.52, 647.73 and 404.64

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Solution

The fourth proportional to 470.52, 647.73 and 404.64 is: 557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.52 : 647.73 = 404.64 : x
  2. Step 2: Convert to fraction form
    470.52/647.73 = 404.64/x
  3. Step 3: Cross multiply
    470.52x = 647.73 × 404.64
  4. Step 4: Simplify right side
    470.52x = 262,097.47
  5. Step 5: Solve for x
    x = 262,097.47/470.52
  6. Step 6: Final answer
    x = 557.04

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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.