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Finding the Fourth Proportional to 1,598.09, 2,397.24 and 428.09

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Solution

The fourth proportional to 1,598.09, 2,397.24 and 428.09 is: 642.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.09 : 2,397.24 = 428.09 : x
  2. Step 2: Convert to fraction form
    1,598.09/2,397.24 = 428.09/x
  3. Step 3: Cross multiply
    1,598.09x = 2,397.24 × 428.09
  4. Step 4: Simplify right side
    1,598.09x = 1,026,222.49
  5. Step 5: Solve for x
    x = 1,026,222.49/1,598.09
  6. Step 6: Final answer
    x = 642.16

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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.