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Finding the Fourth Proportional to 964.61, 1,331.16 and 522.51

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Solution

The fourth proportional to 964.61, 1,331.16 and 522.51 is: 721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.61 : 1,331.16 = 522.51 : x
  2. Step 2: Convert to fraction form
    964.61/1,331.16 = 522.51/x
  3. Step 3: Cross multiply
    964.61x = 1,331.16 × 522.51
  4. Step 4: Simplify right side
    964.61x = 695,537.46
  5. Step 5: Solve for x
    x = 695,537.46/964.61
  6. Step 6: Final answer
    x = 721.06

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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.