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Finding the Fourth Proportional to 898.77, 1,347.44 and 379.19

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Solution

The fourth proportional to 898.77, 1,347.44 and 379.19 is: 568.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.77 : 1,347.44 = 379.19 : x
  2. Step 2: Convert to fraction form
    898.77/1,347.44 = 379.19/x
  3. Step 3: Cross multiply
    898.77x = 1,347.44 × 379.19
  4. Step 4: Simplify right side
    898.77x = 510,940.09
  5. Step 5: Solve for x
    x = 510,940.09/898.77
  6. Step 6: Final answer
    x = 568.49

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Double scale
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1.5x scale

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.