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Finding the Fourth Proportional to 963.29, 1,329.51 and 570.51

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Solution

The fourth proportional to 963.29, 1,329.51 and 570.51 is: 787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.29 : 1,329.51 = 570.51 : x
  2. Step 2: Convert to fraction form
    963.29/1,329.51 = 570.51/x
  3. Step 3: Cross multiply
    963.29x = 1,329.51 × 570.51
  4. Step 4: Simplify right side
    963.29x = 758,498.75
  5. Step 5: Solve for x
    x = 758,498.75/963.29
  6. Step 6: Final answer
    x = 787.40

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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.