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Finding the Fourth Proportional to 957.26, 1,320.58 and 558.88

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Solution

The fourth proportional to 957.26, 1,320.58 and 558.88 is: 771.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.26 : 1,320.58 = 558.88 : x
  2. Step 2: Convert to fraction form
    957.26/1,320.58 = 558.88/x
  3. Step 3: Cross multiply
    957.26x = 1,320.58 × 558.88
  4. Step 4: Simplify right side
    957.26x = 738,045.75
  5. Step 5: Solve for x
    x = 738,045.75/957.26
  6. Step 6: Final answer
    x = 771.00

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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.