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Finding the Fourth Proportional to 962.91, 1,444.37 and 386.19

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Solution

The fourth proportional to 962.91, 1,444.37 and 386.19 is: 579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.91 : 1,444.37 = 386.19 : x
  2. Step 2: Convert to fraction form
    962.91/1,444.37 = 386.19/x
  3. Step 3: Cross multiply
    962.91x = 1,444.37 × 386.19
  4. Step 4: Simplify right side
    962.91x = 557,799.32
  5. Step 5: Solve for x
    x = 557,799.32/962.91
  6. Step 6: Final answer
    x = 579.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.