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Finding the Fourth Proportional to 308.01, 424.82 and 283.18

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Solution

The fourth proportional to 308.01, 424.82 and 283.18 is: 390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.01 : 424.82 = 283.18 : x
  2. Step 2: Convert to fraction form
    308.01/424.82 = 283.18/x
  3. Step 3: Cross multiply
    308.01x = 424.82 × 283.18
  4. Step 4: Simplify right side
    308.01x = 120,300.53
  5. Step 5: Solve for x
    x = 120,300.53/308.01
  6. Step 6: Final answer
    x = 390.57

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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.