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Finding the Fourth Proportional to 404.92, 607.08 and 283.40

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Solution

The fourth proportional to 404.92, 607.08 and 283.40 is: 424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.92 : 607.08 = 283.40 : x
  2. Step 2: Convert to fraction form
    404.92/607.08 = 283.40/x
  3. Step 3: Cross multiply
    404.92x = 607.08 × 283.40
  4. Step 4: Simplify right side
    404.92x = 172,046.47
  5. Step 5: Solve for x
    x = 172,046.47/404.92
  6. Step 6: Final answer
    x = 424.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.