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Finding the Fourth Proportional to 963.58, 1,330.08 and 570.60

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Solution

The fourth proportional to 963.58, 1,330.08 and 570.60 is: 787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.58 : 1,330.08 = 570.60 : x
  2. Step 2: Convert to fraction form
    963.58/1,330.08 = 570.60/x
  3. Step 3: Cross multiply
    963.58x = 1,330.08 × 570.60
  4. Step 4: Simplify right side
    963.58x = 758,943.65
  5. Step 5: Solve for x
    x = 758,943.65/963.58
  6. Step 6: Final answer
    x = 787.63

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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.