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Finding the Fourth Proportional to 959.61, 1,323.63 and 763.59

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Solution

The fourth proportional to 959.61, 1,323.63 and 763.59 is: 1,053.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.61 : 1,323.63 = 763.59 : x
  2. Step 2: Convert to fraction form
    959.61/1,323.63 = 763.59/x
  3. Step 3: Cross multiply
    959.61x = 1,323.63 × 763.59
  4. Step 4: Simplify right side
    959.61x = 1,010,710.63
  5. Step 5: Solve for x
    x = 1,010,710.63/959.61
  6. Step 6: Final answer
    x = 1,053.25

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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.