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Finding the Fourth Proportional to 944.79, 1,407.60 and 898.32

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Solution

The fourth proportional to 944.79, 1,407.60 and 898.32 is: 1,338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.79 : 1,407.60 = 898.32 : x
  2. Step 2: Convert to fraction form
    944.79/1,407.60 = 898.32/x
  3. Step 3: Cross multiply
    944.79x = 1,407.60 × 898.32
  4. Step 4: Simplify right side
    944.79x = 1,264,475.23
  5. Step 5: Solve for x
    x = 1,264,475.23/944.79
  6. Step 6: Final answer
    x = 1,338.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.