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Finding the Fourth Proportional to 1,047.19, 1,445.02 and 605.03

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Solution

The fourth proportional to 1,047.19, 1,445.02 and 605.03 is: 834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.19 : 1,445.02 = 605.03 : x
  2. Step 2: Convert to fraction form
    1,047.19/1,445.02 = 605.03/x
  3. Step 3: Cross multiply
    1,047.19x = 1,445.02 × 605.03
  4. Step 4: Simplify right side
    1,047.19x = 874,280.45
  5. Step 5: Solve for x
    x = 874,280.45/1,047.19
  6. Step 6: Final answer
    x = 834.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.