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Finding the Fourth Proportional to 898.95, 1,349.21 and 351.54

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Solution

The fourth proportional to 898.95, 1,349.21 and 351.54 is: 527.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.95 : 1,349.21 = 351.54 : x
  2. Step 2: Convert to fraction form
    898.95/1,349.21 = 351.54/x
  3. Step 3: Cross multiply
    898.95x = 1,349.21 × 351.54
  4. Step 4: Simplify right side
    898.95x = 474,300.18
  5. Step 5: Solve for x
    x = 474,300.18/898.95
  6. Step 6: Final answer
    x = 527.62

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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.