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Finding the Fourth Proportional to 469.52, 647.75 and 303.83

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Solution

The fourth proportional to 469.52, 647.75 and 303.83 is: 419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.52 : 647.75 = 303.83 : x
  2. Step 2: Convert to fraction form
    469.52/647.75 = 303.83/x
  3. Step 3: Cross multiply
    469.52x = 647.75 × 303.83
  4. Step 4: Simplify right side
    469.52x = 196,802.30
  5. Step 5: Solve for x
    x = 196,802.30/469.52
  6. Step 6: Final answer
    x = 419.15

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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.