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Finding the Fourth Proportional to 957.54, 1,320.66 and 626.06

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Solution

The fourth proportional to 957.54, 1,320.66 and 626.06 is: 863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.54 : 1,320.66 = 626.06 : x
  2. Step 2: Convert to fraction form
    957.54/1,320.66 = 626.06/x
  3. Step 3: Cross multiply
    957.54x = 1,320.66 × 626.06
  4. Step 4: Simplify right side
    957.54x = 826,812.40
  5. Step 5: Solve for x
    x = 826,812.40/957.54
  6. Step 6: Final answer
    x = 863.48

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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.