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Finding the Fourth Proportional to 898.39, 1,347.08 and 349.92

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Solution

The fourth proportional to 898.39, 1,347.08 and 349.92 is: 524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.39 : 1,347.08 = 349.92 : x
  2. Step 2: Convert to fraction form
    898.39/1,347.08 = 349.92/x
  3. Step 3: Cross multiply
    898.39x = 1,347.08 × 349.92
  4. Step 4: Simplify right side
    898.39x = 471,370.45
  5. Step 5: Solve for x
    x = 471,370.45/898.39
  6. Step 6: Final answer
    x = 524.68

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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.