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Finding the Fourth Proportional to 1,009.49, 1,513.68 and 461.19

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Solution

The fourth proportional to 1,009.49, 1,513.68 and 461.19 is: 691.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.49 : 1,513.68 = 461.19 : x
  2. Step 2: Convert to fraction form
    1,009.49/1,513.68 = 461.19/x
  3. Step 3: Cross multiply
    1,009.49x = 1,513.68 × 461.19
  4. Step 4: Simplify right side
    1,009.49x = 698,094.08
  5. Step 5: Solve for x
    x = 698,094.08/1,009.49
  6. Step 6: Final answer
    x = 691.53

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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.