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Finding the Fourth Proportional to 1,097.15, 1,513.08 and 654.89

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Solution

The fourth proportional to 1,097.15, 1,513.08 and 654.89 is: 903.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.15 : 1,513.08 = 654.89 : x
  2. Step 2: Convert to fraction form
    1,097.15/1,513.08 = 654.89/x
  3. Step 3: Cross multiply
    1,097.15x = 1,513.08 × 654.89
  4. Step 4: Simplify right side
    1,097.15x = 990,893.40
  5. Step 5: Solve for x
    x = 990,893.40/1,097.15
  6. Step 6: Final answer
    x = 903.16

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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.