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Finding the Fourth Proportional to 957.54, 1,321.35 and 564.57

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Solution

The fourth proportional to 957.54, 1,321.35 and 564.57 is: 779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.54 : 1,321.35 = 564.57 : x
  2. Step 2: Convert to fraction form
    957.54/1,321.35 = 564.57/x
  3. Step 3: Cross multiply
    957.54x = 1,321.35 × 564.57
  4. Step 4: Simplify right side
    957.54x = 745,994.57
  5. Step 5: Solve for x
    x = 745,994.57/957.54
  6. Step 6: Final answer
    x = 779.07

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1.5x scale

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.