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Finding the Fourth Proportional to 960.54, 1,325.57 and 587.45

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Solution

The fourth proportional to 960.54, 1,325.57 and 587.45 is: 810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.54 : 1,325.57 = 587.45 : x
  2. Step 2: Convert to fraction form
    960.54/1,325.57 = 587.45/x
  3. Step 3: Cross multiply
    960.54x = 1,325.57 × 587.45
  4. Step 4: Simplify right side
    960.54x = 778,696.53
  5. Step 5: Solve for x
    x = 778,696.53/960.54
  6. Step 6: Final answer
    x = 810.68

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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.