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Finding the Fourth Proportional to 470.91, 649.77 and 302.89

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Solution

The fourth proportional to 470.91, 649.77 and 302.89 is: 417.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.91 : 649.77 = 302.89 : x
  2. Step 2: Convert to fraction form
    470.91/649.77 = 302.89/x
  3. Step 3: Cross multiply
    470.91x = 649.77 × 302.89
  4. Step 4: Simplify right side
    470.91x = 196,808.84
  5. Step 5: Solve for x
    x = 196,808.84/470.91
  6. Step 6: Final answer
    x = 417.93

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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.