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Finding the Fourth Proportional to 473.81, 654.12 and 307.94

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Solution

The fourth proportional to 473.81, 654.12 and 307.94 is: 425.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.81 : 654.12 = 307.94 : x
  2. Step 2: Convert to fraction form
    473.81/654.12 = 307.94/x
  3. Step 3: Cross multiply
    473.81x = 654.12 × 307.94
  4. Step 4: Simplify right side
    473.81x = 201,426.44
  5. Step 5: Solve for x
    x = 201,426.44/473.81
  6. Step 6: Final answer
    x = 425.13

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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.