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Finding the Fourth Proportional to 959.28, 1,323.94 and 586.32

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Solution

The fourth proportional to 959.28, 1,323.94 and 586.32 is: 809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.28 : 1,323.94 = 586.32 : x
  2. Step 2: Convert to fraction form
    959.28/1,323.94 = 586.32/x
  3. Step 3: Cross multiply
    959.28x = 1,323.94 × 586.32
  4. Step 4: Simplify right side
    959.28x = 776,252.50
  5. Step 5: Solve for x
    x = 776,252.50/959.28
  6. Step 6: Final answer
    x = 809.20

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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.