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Finding the Fourth Proportional to 880.07, 1,317 and 695.54

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Solution

The fourth proportional to 880.07, 1,317 and 695.54 is: 1,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.07 : 1,317 = 695.54 : x
  2. Step 2: Convert to fraction form
    880.07/1,317 = 695.54/x
  3. Step 3: Cross multiply
    880.07x = 1,317 × 695.54
  4. Step 4: Simplify right side
    880.07x = 916,019.60
  5. Step 5: Solve for x
    x = 916,019.60/880.07
  6. Step 6: Final answer
    x = 1,040.85

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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.