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Finding the Fourth Proportional to 964.66, 1,331.24 and 522.57

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Solution

The fourth proportional to 964.66, 1,331.24 and 522.57 is: 721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.66 : 1,331.24 = 522.57 : x
  2. Step 2: Convert to fraction form
    964.66/1,331.24 = 522.57/x
  3. Step 3: Cross multiply
    964.66x = 1,331.24 × 522.57
  4. Step 4: Simplify right side
    964.66x = 695,670.27
  5. Step 5: Solve for x
    x = 695,670.27/964.66
  6. Step 6: Final answer
    x = 721.15

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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.