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Finding the Fourth Proportional to 898.27, 1,347.30 and 313.18

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Solution

The fourth proportional to 898.27, 1,347.30 and 313.18 is: 469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.27 : 1,347.30 = 313.18 : x
  2. Step 2: Convert to fraction form
    898.27/1,347.30 = 313.18/x
  3. Step 3: Cross multiply
    898.27x = 1,347.30 × 313.18
  4. Step 4: Simplify right side
    898.27x = 421,944.05
  5. Step 5: Solve for x
    x = 421,944.05/898.27
  6. Step 6: Final answer
    x = 469.73

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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.