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Finding the Fourth Proportional to 960.79, 1,325.92 and 587.93

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Solution

The fourth proportional to 960.79, 1,325.92 and 587.93 is: 811.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.79 : 1,325.92 = 587.93 : x
  2. Step 2: Convert to fraction form
    960.79/1,325.92 = 587.93/x
  3. Step 3: Cross multiply
    960.79x = 1,325.92 × 587.93
  4. Step 4: Simplify right side
    960.79x = 779,548.15
  5. Step 5: Solve for x
    x = 779,548.15/960.79
  6. Step 6: Final answer
    x = 811.36

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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.