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Finding the Fourth Proportional to 1,302.65, 1,797.65 and 805.17

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Solution

The fourth proportional to 1,302.65, 1,797.65 and 805.17 is: 1,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.65 : 1,797.65 = 805.17 : x
  2. Step 2: Convert to fraction form
    1,302.65/1,797.65 = 805.17/x
  3. Step 3: Cross multiply
    1,302.65x = 1,797.65 × 805.17
  4. Step 4: Simplify right side
    1,302.65x = 1,447,413.85
  5. Step 5: Solve for x
    x = 1,447,413.85/1,302.65
  6. Step 6: Final answer
    x = 1,111.13

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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.